Sleepy, I took your ideas under advisement. I did speak with some GRF guys. Here's the issues: Boat are molds (Bigfoot is a mold) with radius which spread out stress, would be hard to glass a squared TC and not have it crack. TC flex some and that would be enuf to caise an issue. Even saw on TV a big rig home built by a seafarer that retired using a plywood base but full of large radii, then glassed. I wonder what the inside support was like. Then the added poundage would be a concern. So it is not really a good idea unless starting from new design.
The skin stuff is a termal plastic sort of shrink wrap to get around shapes on the vehicle...no strength and some have tiny holes. I used it on my front window to stop some light and cover the black glass, it has lasted about 6 years in the sun...starting to peel at the frame. The window will be gone on the rebuild.
Being an aluminum boat owner I wish I could build it out of alum alloy, but that would be a total design build, then should just order a furniture style cargo truck box and build inside to your needs. Thx for making me think!