What are the floors in the 2001 Launch constructed of? The reason I ask is that there is something going on in mine. When I bought the boat new it had a small bump on the floor to the left of the driver seat. It has gotten bigger and now every once and a while the carpet is raised up and feels spongy there (in a stright line). Could this be cracked fiberglass? Is the floor made of wood? Should I be concerned? Is this still covered under warranty? Thanks for any help!