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LAST UPDATED:  January 26, 2021

The Best Boat Trailer Guides (Review & Buying Guide) in 2021

Get your boat perfectly aligned on your trailer every time with guides

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PUBLISHED ON January 26, 2021

Launching and loading your boat might not be the most enjoyable aspects of owning a watercraft, but they’re essential activities. It can be tough, though, to perfectly guide your boat on and off its trailer, taking up a lot of time and effort each time you want to hit the water or head home. Why not enlist the help of a set of boat trailer guides?

 

Boat trailer guides, or guide-ons, attach to your trailer and help you easily, safely, and accurately load or unload your boat. They’re simple tools, but they can help you avoid accidents and damage to your boat. Available in many different styles and sizes, boat trailer guides offer you a lot of options. You can discover some of the best boat trailer guide options right here.

Best Overall
SeaSense Trailer Post Guide
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Summary
Summary

These 40-inch tall posts are made from durable PVC. The kit comes with all of the necessary mounting hardware.

Pros
Pros
  • High visibility red caps
  • Corrosion-resistant
Cons
Cons
  • Locknuts aren’t durable 
  • Instructions incorrect
Best Overall
SeaSense Trailer Post Guide
Best Value
CE Smith Guide-On Bunkboard
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Summary
Summary

Guide your boat smoothly with these two-foot boards that measure  2 x 4 x 24 inches. Adjust the board's width from 13 to 21 inches.

Pros
Pros
  • Precision fabrication 
  • Marine carpet
Cons
Cons
  • Zinc-plated, not galvanized  
  • Can bend
Best Value
CE Smith Guide-On Bunkboard
Honorable Mention
Extreme Max Heavy-Duty Roller Guide-On System
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Summary
Summary

This heavy-duty roller guide system has a zinc-coated frame. The rollers measure 13 inches in length.  It fits trailer frames that are up to five inches tall.

Pros
Pros
  • Custom-formed 97-degree arms
  • Includes all mounting hardware
Cons
Cons
  • Not meant for use in brackish or saltwater 
  • Zinc-plated, not galvanized
Honorable Mention
Extreme Max Heavy-Duty Roller Guide-On System
Boat Trailer Guide in a garage
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All of our reviews are based on market research, expert input, or practical experience with most products we include. This way, we offer genuine, accurate guides to help you find the best picks.

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Benefits of Boat Trailer Guides

  • Prevent damage. You could easily cause damage to the hull of your boat if you run it into the roller bracket, frame, or fenders. Having guides keeps your boat in great condition.  
  • Safer hauling.  You need to have your boat centered on the trailer. This keeps the weight balanced and makes it safer to drive down the road. A balanced boat remains stable when taking off, stopping, and going around turns. 
  • Faster loading. With trailer guides, you can quickly and easily load your boat onto the trailer. The guides direct the boat where it needs to go so that it’s centered without the need for adjustment. 

Types of Boat Trailer Guides

Post

This style of guide has adjustable metal brackets that clamp onto your boat trailer. Then there are PVC posts that stick upward vertically. The goal is for the posts to be visible above the water when you back your trailer down a ramp. 

This makes it easy to have a vertical pinpoint of where the trailer is located in the water. These work best for smaller boats, as larger ones can be too heavy and cause the PVC posts to bend and snap. If you do use them with a larger boat, only do it manually instead of driving. 

Roller

This style of guide similarly attaches to your trailer as the posts with an adjustable bracket. Instead of a PVC post, the rollers are nine to 12 inches in size. They’re made of non-marking rubber to protect your boat. This style of guide works well with larger boats because they’re sturdy and durable. You’ll want to buy the correct size that matches the size of your boat. Their downside is that they’re harder to see than the other post styles. 

Bunk

This style of guide uses the standard adjustable bracket that hooks and locks down onto your trailer frame. Typically they’re made from planks of wood that are wrapped in carpet. You’ll then adjust their height to accommodate your boat’s size and the depth of your hull. The longer the guides are, the more support brackets you’ll need to support the weight of your larger boat. 

Top Brands

SeaSense

Boat enthusiasts know the SeaSense name for its innovative products and affordable prices. It’s dedicated to improving the boating experience of its customers. The SeaSense Polyvinyl Bow Roller will guide your boat smoothly onto your trailer. 

Extreme Max

With headquarters located in Lino Lakes, Minn., the Extreme Max products are distributed throughout the United States. Its products are popular for being durable for all of your extreme outdoor activities. If you need to replace your guides, the Extreme Max Single Post Horizontal Bunk is just what you need. 

CE Smith

Based in Taiwan and China, the team at CE Smith is dedicated to challenging themselves to produce high-quality metal products. The goal is to give its customers the best value in trailer parts and accessories. For a sleek look to your trailer guides, consider the black CE Smith Trailer PVC Boxed Post

Boat Trailer Guides Pricing

  • Under $100: These guides are the simplest and smallest. They may or may not come with installation hardware. If you have a smaller boat, then you should be able to find a guide kit that's in this price range. 
  • $100 to $150: You’ll find kits of varying size and quality in this price range. They’ll be made of durable materials and will effectively protect your boat. 
  • $150 and up: Guides that are in this price range are the largest. They are made of the most durable and strongest materials. This makes them ideal for large boats. 

Key Features 

Style

Look for a trailer guide style that works with your needs. Consider the size and shape of your trailer, the size and weight of your boat, and the type of ramp you use. If you need visibility, posts are going to help. If you have a large boat you need help guiding, then rollers are a smart choice. Bunks help hold your boat in place and keep it aligned. 

Material

The materials that your guide is made out of should be both gentle on your boat and durable. PVC is gentle on your boat because it will break before your boat will. Rollers should be made out of a non-marking rubber that has UV resistant qualities. Bunks should be made from treated wood and be wrapped in a marine-grade carpet. Aluminum is the best metal because it’s lightweight and corrosion-resistant. Steel should be galvanized. 

Adjustability 

Look for a set of adjustable guides. This lets you get a secure fit to your trailer’s unique size and shape. Guides are built to have universal compatibility, so you’ll want to confirm that it will work on yours. Look for adjustability in both the height and width. This lets you accommodate your boat’s size and shape and the amount of visibility you’ll have. 

Other Considerations

  • Durability. The material your trailer guides are made out of will determine how durable they are. Posts are typically made of PVC. They’re corrosion-resistant but also lack strength. This can be a good thing because you’d rather the pole break than your boat. Rollers are made of tough rubber, but they can grow brittle from extended UV exposure. Bunks typically use wood and carpet, but the wood can rot, and the carpet can fray. 
  • Price. Your budget will influence the style and quality of guides that you buy. A basic and low budget kit may not come with everything or be lower quality. A more expensive kit may work for a larger boat, have higher quality materials, and come with the necessary installation hardware. Determine the budget necessary to get the equipment that you need. 
  • Boat Compatibility. The guides that you buy need to be compatible with your trailer and boat. If they don’t work with one, then you’ll be disappointed with their performance. Measure your trailer and ensure you’ll be able to install the guides on your trailer. Measure your boat and ensure it will support the size and weight of your boat. 

Best Boat Trailer Guides Reviews & Recommendations 2021

Best Overall

This handy kit includes everything you need to install trailer guide poles onto your current boat trailer, and it’s built to be sleek, sturdy, and able to withstand a lot of wear and tear. You’ll get two guide poles made out of steel, PVC caps, steel supports, and the bolts and hardware required for mounting. You can choose the size that best suits your trailer and your boat — the poles are available in 40, 48, and 60-inch heights. These boat trailer guides don’t take long to install, and they help you perfectly center your boat on the trailer for easy, effortless hauling. 


Unfortunately, the lock nuts included with the kit aren’t durable. You’ll do better to buy your own. The instructions aren’t accurate and can lead you through the wrong steps.

Best Overall
SeaSense Trailer Post Guide

This handy kit includes everything you need to install trailer guide poles onto your current boat trailer, and it’s built to be sleek, sturdy, and able to withstand a lot of wear and tear. You’ll get two guide poles made out of steel, PVC caps, steel supports, and the bolts and hardware required for mounting. You can choose the size that best suits your trailer and your boat — the poles are available in 40, 48, and 60-inch heights. These boat trailer guides don’t take long to install, and they help you perfectly center your boat on the trailer for easy, effortless hauling. 


Unfortunately, the lock nuts included with the kit aren’t durable. You’ll do better to buy your own. The instructions aren’t accurate and can lead you through the wrong steps.

Best Value

This bunk board features soft, protective sides that won’t damage your boat as you load or unload it. It features lower-profile upright guides, which are tilted boards measuring 2 x 4 x 24 inches. The boards are untreated Southern yellow pine that’s covered in high-grade marine carpet for scratch- and damage-free movement. The guide-on bunk board has a height of 21 inches, and the sides can be adjusted out to a distance of 13 inches for added flexibility. All of the hardware you need to mount this boat trailer guide onto your trailer is included, and it's best used for trailer frames measuring up to 3 x 4.25 inches.


The downside of these guides is that they are zinc plated and not galvanized. This makes them less resistant to corrosion. They can also bend from the weight of your boat.

Best Value
CE Smith Guide-On Bunkboard

This bunk board features soft, protective sides that won’t damage your boat as you load or unload it. It features lower-profile upright guides, which are tilted boards measuring 2 x 4 x 24 inches. The boards are untreated Southern yellow pine that’s covered in high-grade marine carpet for scratch- and damage-free movement. The guide-on bunk board has a height of 21 inches, and the sides can be adjusted out to a distance of 13 inches for added flexibility. All of the hardware you need to mount this boat trailer guide onto your trailer is included, and it's best used for trailer frames measuring up to 3 x 4.25 inches.


The downside of these guides is that they are zinc plated and not galvanized. This makes them less resistant to corrosion. They can also bend from the weight of your boat.

Most Durable

This boat trailer guide set is a complete system — and it’s made with extra-tough materials. It’s worth paying a bit more for this impressive setup. You’ll get one pair of heavy-duty roller guide-ons that bolt onto any bunk or roller style trailer frame measuring up to 3 x 4.25 inches. A set of custom-formed arms are angled at 97 degrees and extend 13 inches from the side to guide your boat easily, without damage or accidents. The entire boat trailer guide setup is coated in zinc for corrosion resistance, and it can withstand freshwater well. Just keep in mind that saltwater and brackish water can cause corrosion or potential damage.


One issue with these guides is that they aren’t meant for use in brackish or saltwater. This isn’t an issue if you only plan to use your boat in freshwater. The metal is zinc plated and not galvanized.

Most Durable
Extreme Max Heavy-Duty Roller Guide-On System

This boat trailer guide set is a complete system — and it’s made with extra-tough materials. It’s worth paying a bit more for this impressive setup. You’ll get one pair of heavy-duty roller guide-ons that bolt onto any bunk or roller style trailer frame measuring up to 3 x 4.25 inches. A set of custom-formed arms are angled at 97 degrees and extend 13 inches from the side to guide your boat easily, without damage or accidents. The entire boat trailer guide setup is coated in zinc for corrosion resistance, and it can withstand freshwater well. Just keep in mind that saltwater and brackish water can cause corrosion or potential damage.


One issue with these guides is that they aren’t meant for use in brackish or saltwater. This isn’t an issue if you only plan to use your boat in freshwater. The metal is zinc plated and not galvanized.

Most Adjustable

Handy and helpful, this set of boat trailer guides will help you more easily guide your boat into place whether you’re coming or going. It includes two 2-inch  40 white PVC posts that stand tall on the sides of your trailer, as well as 16-gauge pre-galvanized steel uprights that stand 18 inches tall. Those uprights slide into the PVC guideposts for stability, and they can be adjusted anywhere from a few inches to 13 inches out from each side of your boat trailer, giving you flexibility. This boat trailer guide set is suitable for use on trailers with frames up to 3 x 4.25 x 1.5 inches in size.


Unfortunately, this kit has many pieces and requires a lot of assemblies. This can be time-consuming and complicated. The kit also lacks a method for securing the PVC poles to the metal pipe.

Most Adjustable
CE Smith Trailer Post Guide-On

Handy and helpful, this set of boat trailer guides will help you more easily guide your boat into place whether you’re coming or going. It includes two 2-inch  40 white PVC posts that stand tall on the sides of your trailer, as well as 16-gauge pre-galvanized steel uprights that stand 18 inches tall. Those uprights slide into the PVC guideposts for stability, and they can be adjusted anywhere from a few inches to 13 inches out from each side of your boat trailer, giving you flexibility. This boat trailer guide set is suitable for use on trailers with frames up to 3 x 4.25 x 1.5 inches in size.


Unfortunately, this kit has many pieces and requires a lot of assemblies. This can be time-consuming and complicated. The kit also lacks a method for securing the PVC poles to the metal pipe.

Honorable Mention

Featuring guide posts made out of non-marring, marine-grade PVC, this guide kit offers 50 inches of height so you can easily see the guideposts as you maneuver. It attaches onto your boat trailer with clamp-on installation, and a set of high-strength, high-grip mounting brackets offer a secure fit. The adjustable design of this boat trailer guide setup ensures it’ll fit any boat’s hull. This boat trailer guide is a solid option whether you’re new to boating or a longtime pro. It’ll make it easier to get your boat on and off the trailer even under adverse conditions like winds or currents. 


Unfortunately, these guides aren’t compatible with trailers that have a step on the back of the wheel. The U bolt may also be too long.

Honorable Mention
Fulton Economy Trailer Boat Guide

Featuring guide posts made out of non-marring, marine-grade PVC, this guide kit offers 50 inches of height so you can easily see the guideposts as you maneuver. It attaches onto your boat trailer with clamp-on installation, and a set of high-strength, high-grip mounting brackets offer a secure fit. The adjustable design of this boat trailer guide setup ensures it’ll fit any boat’s hull. This boat trailer guide is a solid option whether you’re new to boating or a longtime pro. It’ll make it easier to get your boat on and off the trailer even under adverse conditions like winds or currents. 


Unfortunately, these guides aren’t compatible with trailers that have a step on the back of the wheel. The U bolt may also be too long.

Honorable Mention

Choose from 45 or 65 inches for your posts. You’ll get a pair of posts and the required installation hardware. You’ll find the installation is easy thanks to the bolt-on system. Supporting the PVC poles are steel support beams. The steel support beam extends almost the entire length inside of the PVC pole for stability and strength. The hardware is zinc-coated for use in freshwater. You can install these guides on both roller and bunk-style trailer frames that are three to four and a quarter inches tall. There’s an additional hardware kit available if you have a taller trailer. 


One drawback of this set is that it isn’t designed for use on a trailer going in saltwater or brackish water. You’ll want to change out the hardware if you use your boat in this type of water.

Honorable Mention
Extreme Max White 45

Choose from 45 or 65 inches for your posts. You’ll get a pair of posts and the required installation hardware. You’ll find the installation is easy thanks to the bolt-on system. Supporting the PVC poles are steel support beams. The steel support beam extends almost the entire length inside of the PVC pole for stability and strength. The hardware is zinc-coated for use in freshwater. You can install these guides on both roller and bunk-style trailer frames that are three to four and a quarter inches tall. There’s an additional hardware kit available if you have a taller trailer. 


One drawback of this set is that it isn’t designed for use on a trailer going in saltwater or brackish water. You’ll want to change out the hardware if you use your boat in this type of water.

Honorable Mention

Give your boat trailer a sleek and modern look with black PVC guide poles. This kit comes with everything you need to install them, including the support beams and hardware. You can choose from 40 and 60 inch high posts for the perfect amount of visibility. You can also adjust them up to 13 inches out on each side, making them compatible with a wide range of boat sizes. You can install these guides on trailers that are between 3 and 4 and a quarter inches high. You’ll appreciate the high quality made in the USA construction. 


Unfortunately, you may find that the U bolts aren’t long enough. You can easily replace them with the right size of U bolt. The black PVC can leave black marks on some boats.

Honorable Mention
CE Smith Trailer PVC Boxed Post Guide

Give your boat trailer a sleek and modern look with black PVC guide poles. This kit comes with everything you need to install them, including the support beams and hardware. You can choose from 40 and 60 inch high posts for the perfect amount of visibility. You can also adjust them up to 13 inches out on each side, making them compatible with a wide range of boat sizes. You can install these guides on trailers that are between 3 and 4 and a quarter inches high. You’ll appreciate the high quality made in the USA construction. 


Unfortunately, you may find that the U bolts aren’t long enough. You can easily replace them with the right size of U bolt. The black PVC can leave black marks on some boats.

Honorable Mention

This roller style of trailer guide can fit onto a trailer that’s three to four and a quarter inches tall. There’s also larger installation hardware available for installing these guides on trailers that are 5.25 to 6.25 inches tall. These guides are designed for use with larger boats that are over 16 feet in length. You’ll appreciate the increased adjustability that these guides offer. You’ll be able to create a custom fit for the shape of your hull. The hardware is zinc coated, making them meant for use in freshwater. 


One drawback of this guide kit is that the bumpers are relatively small. There are other kits with longer bumpers that will provide your boat with more protection. You’ll also need to replace the zinc-coated hardware if you plan to use these guides in saltwater or brackish water.

Honorable Mention
Extreme Max Adjustable Roller Guide-On System

This roller style of trailer guide can fit onto a trailer that’s three to four and a quarter inches tall. There’s also larger installation hardware available for installing these guides on trailers that are 5.25 to 6.25 inches tall. These guides are designed for use with larger boats that are over 16 feet in length. You’ll appreciate the increased adjustability that these guides offer. You’ll be able to create a custom fit for the shape of your hull. The hardware is zinc coated, making them meant for use in freshwater. 


One drawback of this guide kit is that the bumpers are relatively small. There are other kits with longer bumpers that will provide your boat with more protection. You’ll also need to replace the zinc-coated hardware if you plan to use these guides in saltwater or brackish water.

Honorable Mention

What makes these guides stand out is that you can choose the type of hardware that comes with your kit. If you plan to only use your boat in fresh water, then there’s the zinc-coated hardware. If you plan to use your trailer in saltwater or brackish water, then choose the galvanized set. You’ll get a pair of 40-inch tall steel poles with PVC poles that go over them for a total height of 47 inches. The included hardware fits trailers that are three to four and a quarter inches tall. You can also adjust them up to 14 inches out on either side. 


The downside of this kit is that the bolts are short, which can limit its trailer compatibility. There are also no included instructions. 

Honorable Mention
Ve-Ve Inc Boat Trailer Post Guide-On

What makes these guides stand out is that you can choose the type of hardware that comes with your kit. If you plan to only use your boat in fresh water, then there’s the zinc-coated hardware. If you plan to use your trailer in saltwater or brackish water, then choose the galvanized set. You’ll get a pair of 40-inch tall steel poles with PVC poles that go over them for a total height of 47 inches. The included hardware fits trailers that are three to four and a quarter inches tall. You can also adjust them up to 14 inches out on either side. 


The downside of this kit is that the bolts are short, which can limit its trailer compatibility. There are also no included instructions. 

Honorable Mention

These uniquely styled boat guides are designed for holding a pontoon in place. They can also work with boats that have a space in the middle of the hull, such as a catamaran. The bumper protection is on the outside of the poles to support the boat from the inside. To keep your boat safe, the bumpers have rubber rollers. This keeps the boat centered on the trailer. You can install this guide on trailer frames that are three to four and quarter inches tall. Use the U bolt brackets to attach the guides to your trailer. You’ll find this kit to be durable as it’s made from galvanized steel and attached with zinc plated hardware.


One drawback of this kit is that the trailer height compatibility is limited. The hardware is also not made of galvanized steel.

Honorable Mention
CE Smith Trailer Pontoon Bunk Board Guide-On

These uniquely styled boat guides are designed for holding a pontoon in place. They can also work with boats that have a space in the middle of the hull, such as a catamaran. The bumper protection is on the outside of the poles to support the boat from the inside. To keep your boat safe, the bumpers have rubber rollers. This keeps the boat centered on the trailer. You can install this guide on trailer frames that are three to four and quarter inches tall. Use the U bolt brackets to attach the guides to your trailer. You’ll find this kit to be durable as it’s made from galvanized steel and attached with zinc plated hardware.


One drawback of this kit is that the trailer height compatibility is limited. The hardware is also not made of galvanized steel.

Tips

  • Check your guides before each season. Check that the brackets are secured to your trailer. Look for cracks in your PVC poles. Check for corrosion on metal parts. Rewrap carpet on wood boards if needed. 
  • Consider installing more than one type of guide on your trailer. This will make loading your boat easier in any location or water condition. 
  • Check that your boat is aligned correctly after installation. There should be no less than a two-inch gap between the keel and the tongue plate cover. 

FAQs

Q: Do boat trailer guides really work?

Yes, guides work to prevent damage to your boat and makes loading your boat at the ramp significantly easier. 

Q: What are boat trailer guides for?

Using boat trailer guides makes taking your boat on and off of the trailer much easier. You’ll know exactly where the trailer is for better aim. Then during loading, the boat will remain aligned better. This reduces the risk of damage to your hull. 

Q: How far do you need to back a boat trailer into the water?

For most boats, this means about two-thirds of the trailer is in the water. Don’t put the trailer too deep into the water, or you risk the boat’s bow floating left or right over the bunks and going crooked. 

Q: Are boat trailers hard to use?

No, but it does take practice to maneuver it right. Start slow and practice on a day where the ramp isn’t busy, and you aren’t in a rush. Pressure only makes learning harder. With practice, you’ll find maneuvering your trailer to get easier, like second nature. 

Final Thoughts

You can’t go wrong with the SeaSense Trailer Post Guide because it’s a decent height, corrosion-resistant, and comes with everything you need to install it. If you’re looking for a more affordable option, the CE Smith Guide-On Bunkboard has precise fabrication and marine-grade carpet.