Attwood 15700-3 Seat Mount, Clamp-On With Swivel, Adjusts from 7 ½ inches to 18 inches, Black, Powder-Coated Steel

Strong, sturdy, works very well. Stays in place. Make yourself a tool with a piece of notched pipe (as shown in pics) to make the wingnuts easy to tighten. I used pvc pipe, cut a notch and drilled a hole for a screwdriver to tighten. Check wingnuts and tighten once or twice a week. Very happy with this purchase.

Top notch. I was not expecting this level of quality on a mount that I got for under $20. I'm guessing the aluminum boat seat you attach this to would give out before this mount does. The rotation is build by some low friction plastic slide component instead of more traditional ball bearing. It seems like it will be reliable but that is only difference I see between this design and the 30 year old part I was replacing. Happy with the product. Will update if lake trials change that opinion.

This is a good way to add some seats to a small boat. Installation can be a little tricky if you're trying to tighten the wing nuts by hand or with pliers. I made a tool by cutting a slot in a piece of 3/4" PVC pipe. It fits right onto the wing nuts and makes installation/removal a lot easier. I found that the mount clamped down tightly enough, but just for an added safety measure I ran a nylon strap through the bracket and under the seats.

Exactly what my aluminum boat needed to have better seats installed 👍 definitely worth admission might be buying another boat soon if I doo probably order these again 4

This seat swivel is all metal, which makes it much more durable than the ones with plastic where the base contacts the boat you're mounting it to. It worked great for my fishing trip.

Simple install and works as described, if you have 28@ seats go with the 20”

If you have a boat with only bench seats, then this mount is necessary. In fact, I was unable to find any other device to add a soft seat to the top of a bench closed at the sides (inflammable filling under seat).The concept of the mount is good, but tightening the four screws is an adventure. I have two seats with this mount in my 14' fishing boat. I am 230 pounds and my friend is 220 pounds. After rotating and sitting in these for 4 or 5 trips, I have found the mounts to loosen. And tightening all wing nuts is then necessary. And here is the real problem. The wing nuts are extremely hard to get to. I found a 3" wing nut drill bit that works on 2 of the 4 nut/bolt placements. But the other two are recessed more than 3". I have yet to find the exact tool for getting at ALL four wing nuts tightened securely.Directions for installation do not help. I have tightened my mounts to the point that there are permanent indentations in the seats themselves. I would like to know if there is ANY tool that could reach 5 or 6 inches beneath the mount in very close quarters. Even a needle-nosed pliers did not get it done.The purchase of the wing nut drill bit accessary is absolutely necessary to even come close to tightening the mounts to the bench seats. Thus a 3-star rating. Find the right tool for tightening, and this mount would easily get a 5-star rating.

Highly recommend and item as described! Easy to install with my boat seat, clamps and secure onto my 12 foot Lund V hull boat.