Not sure if you were asking me. Just floating however. The bench came in a variety of widths. I think I bought the 55" X 15" Fit with just a very little room on each side.
I liked that is was only 15" wide as the space is limited. The bench was heavy enough that I never had it move even in rough seas. That may have been helped by the fact that I had SeaDek on the floor so would not slide so easily.
Made a big difference in how I used the boat. From being a 2 person boat to a comfortable 4 person boat.
Also made getting into and out of the boat much easier as you can step on the bench from the dock then to the floor.