SinDale I'm with you I think the last thing I would put on it is carpet.I haven't used it on a boat but I would go with frp Fiber reinforced plastic.It comes in 4x8 sheets.It's easy to work with it can be cut with a plywood blade in a circular saw just put the blade in backwards.It dose not hold moisture like carpet,and your hooks don't get stuck in it.You can get frp at Lowes or home depot.I Have only seen it there in white and yellow.If you go to Henrietta Building Supply you can order other colors.If it were me while at (HBS)I would get 1 5eights galvinized metal studs and track to reframe it,as long as it is not in contact with alum.or other metal that it could react with.Yes over a long time it may leave rust stains but it will hold up a lot better than wood,much liter than wood easy to conform to curves.You can get it in heavier gauges 18 Gauge is real nice to work with.I built a casting platform in my freinds boat and it and turned out nice and has held up great,and was much liter than using wood.For the sheeting I wood use exterior plywood the frp will keep it dry.Leave your plywood up 1/4 " to keep it out of the water the frp will cover the voids.This is just my thoughts I am sure there will be some - feed back but I have done a few boat projects and have had good results.Good luck.