Dutton-Lainson Company 6387 4' Galvanized Roller Bunk

I bought these for around $103 on an open package "Amazon deals". Other than the outside packaging being beat up, the contents were perfect. Amazon paid for shipping all the way to Alaska ( two day UPS no less), so I think they lost money on my order! These are very heavy duty bunks. I was surprised how heavy the package was, and the steel thicknesses is quite substantial. I have mine extending about 20 inches off the end of the trailer, and have no worries about cantilevering the supports that much. Note: I have a lightweight Jon, you may want add'l support for a heavier boat.Rollers are silky smooth, and if you buy the right mounting brackets you can angle these slightly to the angle of your hull for a perfect match and full contact on the rollers. I'm using just a small fraction of the recommended weight capacity, so absolutely no issues with binding for me.Most of the complaints I see about these kind of rollers have to do with the rollers wearing out after a few seasons. I see replacement rollers are available, and only time will tell how long they hold up, but the boat does protect them from the sun and elements for the most part.As other point people have pointed out, you need to have a brain to use these! Do not release your safety chain or winch before you get to the water's edge or your boat is going to roll off the trailer, duh! I would also suggest getting some side bunks/rails, as these rollers are slick enough your boat could potentially slide laterally. I've got a flat bottom Jon myself, and it's not impossible even with the ribs on the bottom for the boat to slide over the rollers laterally. I think side rails are a good idea in any event as it makes loading the boat in current so much easier.The beauty of these rollers is you don't need to back the trailer very far into the water for launching or loading. In fact, you don't even need to motor the boat onto the trailer, depending on the size of your boat of course. For loading a small 14 footer, I first attached my winch at the bow, and with the second line at the Stern and facing upstream, I push my boat out into the water from the shore. One hand goes on the winch cable, the second on the Stern cable. With side rails/bunks they will catch the bow of the boat and stabilize it.I start pulling forward on the winch cable (by hand) as the stern swings around parallel to the trailer. The rollers allow me to pull the boat up onto the trailer, while my Stern rope helps guide things. At this point, I use the handle of the winch to pull the boat the rest of the way up, which is a one-handed operation with my lightweight Jon.I can also launch in extremely shallow water, and never have to go more than knee deep in the water. Roller bunks completely change the way you will deal with your boat (for the better). Just use some common sense with your winch and safety chains.I would not hesitate to recommend these for the price.

We like to go to a local river to fish. When the river is high, loading and unloading our 17.5 foot Bass Tracker is no problem. When the river drops, you can back all the way to the end of the boat ramp and there's still not enough water under the boat to float it. One day we went to the river and had just enough water to get the boat OFF the trailer, but that afternoon, the river had dropped. The trailer's bunks were six inches above the water line! We had an electric winch rated at 3,000 pounds, but it had issues pulling the boat's dead weight up on to the carpeting bunks and then the rest of the way on the trailer at the angle we had on the ramp. Two hours later, we had the boat halfway on the trailer and wound up pulling up the ramp to level ground and spending another 30 minutes getting it ALL the way on and tied down. We knew then, we had to do something different.These roller bunks are AWESOME! We fastened them on top of our existing carpeted bunks (the metal they're made from just doesn't seem "sturdy" enough without the full support of the original bunk boards). We used big sturdy stainless steel bolts with large washers and locking nuts to secure them on the trailer.Our next trip to the river went much smoother. Launching was a snap! We tied the bow line to the trailer and released the boat's winch line. The boat slid off the trailer with a single easy push and eased into the water. When we returned to the ramp that afternoon, loading was just as simple. We let out enough hand-winch line to clip to the eye on the front of the boat, and even though the bunks were now 8 inches above the water line, the boat "rolled" right up on them without any issues. We had the boat on the trailer in just a few minutes and were ready to head home.I can't recommend these rollers enough if you're launching your boat in places where the ramp will not allow you to get the trailer in far enough so the water floats your boat. These things are both a back saver and a time saver. They're well made, but I don't recommend mounting them on the mounting brackets alone. The steel on them just doesn't seem "beefy" enough to support the weight of a boat and its gear, motor, etc.

Worked great but was to long for my boat trailer, when I tried loading the boat would just roll back off unless I left the motor running. So I ordered the four foot length and it works great, so much easier to unload and load. Would highly recommend. I actually gave the five footers to my brother, who owns a longer boat.

Item as described, item as expected. Very easy installation works well

These work great, roll easy, and seem durable. Major improvement over the capeted bunks I had.

I like them the boat goes on and off the trailer easier.

Bought this to replace worn out carpet covered bunks. It is for a smaller boat 15 foot Jon boat so I'm sure it isn't going to have any problems with the weight. I was able to snag this through Amazon warehouse deal. Lowest price I could find. The box was completely tore up but the bunks were in perfect condition. I used stainless steel 3/8 2 inch lag bolts to mount the bunks to the 2x4 pressure treated wood. I am ordering another set to built a boat ramp from a boat shed into my parents lake.

One season and these things are falling apart literally! They're rusty and the rollers are coming apart. Have only launched the boat with them less than 10 times, the boat is not heavy either 800lbs.