So I went out to the boat tonight to cut a hole in the deck to see what I was working with. I felt around the deck to see if there were any soft spots. To my surprise there were none. I thought I might have to replace it but now I'm not so sure. However I'm not out of the woods. The previous owner layed a sheet of plywood down over the deck so that he could mount the seats he said. He silconed around the edges of the plywood so that it would not get under it. I know sometime that guys put ply over the deck for a cheap fix. Do you think that the deck is rotten under the ply or do you think the guy was honest about laying a piece of ply down to mount the seats. The next step is to see if I can unscrew the plywood from the deck and see what is there. I'm pry that it won't be bad.