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Keep your small boat centered during the loading process, despite wind and waves, with these bunk-board-style guide-ons. Corrosion-resistant guides are covered with marine-grade carpet and fit trailer frames up to 3" wide x 4-1/4" tall.
Features:
Specs:
Adjustable boat guides can be fine-tuned to work with your boat and your trailer. The pre-galvanized steel support posts mount horizontally on top of or below your trailer's frame rail. Just slide the posts into the boat guide supports and secure the posts so that the distance between the bunks correctly matches the width of your boat. The bunk boards then tilt to conform to the boat's hull. Guides will help to center your boat during loading and to hold the boat during transport.
Pre-Galvanized Steel
Pre-galvanized steel parts are stamped from a sheet of steel after it has already been galvanized. The edges of the pre-galvanized parts often lose their zinc coating during the stamping process. Because of the thinness of the coating less than 1 mil and the fact that the edges remain exposed, pre-galvanized parts can begin to oxidize and rust quickly, so its recommended that they be primed and painted.
Customer Satisfaction Score:
93% were satisfied with this product
7% of customers were not satisfied
Ratings & Reviews
The Bunk-Style Guide-Ons are fantastic! My trailer is built different than most and didn't have a side rail to mount the guide ons, but I welded a 3x2 tube to the axle cover and this allowed for easy mounting. Most people will not have this problem. They were really easy to install. They made loading the boat as easy as unloading. I have been wanting guides for a long time and I cannot express how happy I have chosen these guides. Thank you etrailer.com!
Package cane in a timely manner and was as advertised. Install was quick and easy. Was installed on a 18’ ez load trailer.
Didn't quite fit my boat and trailer, but was easy to modify
Exactly what I needed for my crestliner boat trailer
James
4/25/2025
It’s awesome if your boats hard to load slap these on it problem solved
Easy install and looks like the will last a long time. Hoping this will solve our loading boat on trailer issues on windy days.
I just received them and havent been able to attach them to the trailer yet, but they look really sturdy.
Always super fast delivery with a great selection of products. I just ordered a set of trailer bunks to help out when I’m loading when it’s windy, looks like they’ll do a good job!!!
Fast shipping, heavy duty constuction, easy to install!
Good sturdy fit. Easy to install and ad just.
Thanks for the loading bunks for my boat! Should work fine. Fast FREE shipping, thank you! Super easy installation. Highly recommended!!
I was going to make my own but I am very glad I didn’t. These guide-ons are well made a fit great. The perfect height for the line of my boat. Easy to install everything was there. Fast shipping as well. Highly recommended.
These bunks are well built, easy to install, and make guiding the boat onto the trailer so much easier. Great purchase. Quick response from trailer
Fit perfectly. Easy install.
Quick shipping, great quality. I ended up using it as a step/board to walk on while docking: loading the boat without getting my feet wet! I’ve been using it for about a year now with no problems.
Very happy with fitment and the speed of which I could install it. It took about an hour and 15 minutes.
The side boards are in fact wood, and I recommend drilling pilot holes for the wood screws.
Now for the negatives...
Torque specs or the u-volts would have been appreciated for those of us that care.
But most important would be the pivoting bunk mount. As seen in the photos, they are sheared off square. Rounded edges would be more appropriate as most kids around a boat are wearing clothing with little cut resistance. Someone sliding off the boat or getting their knee on it while getting in could really ruin an outing. I would have rounded them off myself, but I didn’t want to lose the galvinized finish.
The boat trailer bunk guide kit was easy to install. It's sturdy And looks great on my trailer.
It would not fit my 2025 Tracker Pro 170. The closest I could get it to the boat was 6 inches. Because of the way the bend is. If you look at their own video. The guy has it as close as he can get it. If he moves it any closer, it won't set flat on the frame because of the bend in the bars. I ended up taking mine to a welding shop. And having the bars. Bent to 90-degree angle. And was able to make that work. It cost me an extra 60 bucks.
From the detailed informational and installation videos of virtually every product to the excellent communication and customer service, I will always choose etrailer over other online retailers.
The bunk style guide ons were perfect for my needs. Installation was a snap and they look really good. I followed their recommendation and painted them (black) before installing. I used a couple of clamps to hold the boards in place so I was able to easily complete the project by myself. That also allowed me to drill the pilot holes without taking them back off. Much quicker and very easy.
I built a rowboat and needed a trailer. I purchased the Guides and Brackets from etrailer and they fit and work perfectly. Very high-quality material and I am very happy with my purchase.
Make retrieving boat so much easier. Now back the trailer in deeper and boat is centered perfectly. Way less cranking on the winch, but feet get wet cause trailer is back farther. I rather take shoes off or switch to boots than crank on the winch.Speeds up load time at ramp. Only down side is I had to buy longer u bolts because my trailer sides were higher than the stock bolts could accommodate. Cost me more money, cause they ain't cheap and I'm suck with 8 u bolts that I have no use for. They should allow you specify the bolt size you need based on trailer frame height.
Easy to install. This was for a large flat bottom boat where putting the boat on a trailer in the wind was problematic. This has greatly helped with this issue.
Very worthwhile purchase.
Jeff
11/20/2025
The side boards have consistently proven a huge help with even slight winds. Loading the boat on the trailer is much easier now.
Perfect solution to convert my trailer for my 14' aluminum boat to a drive on self loader. Easy installment and it can be done by one person and a couple clamps. I would recommend this to anyone who has a trailer without side rails.
Michel
8/28/2019
Perfectly as designed
I don’t think you could do it any better. Fast shipping , great product. Just what I needed. Thanks
Kenneth L.
4/4/2026
It’s a good product. I just had to modify it so it wouldn’t bend so easily when I put the boat on the trailer if I bumped it to hard. Basically the support tubes are too weak at the bend.
I bought this product because of the difficulty trying to get my pontoon boat onto the trailer. The wind and wake kept pushing me off alignment. I installed the guides and was able to load the boat the first time. No more stress, just fun times now. The guides are very durable and fairly easy to install. I highly recommend this product
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John D.
4/23/2014
Guides still working great. One of the best investments I made for my boat.