I know this is an old thread but I just finished my cover. It is 1" foam framed with cedar. It is attached to the bed with 2 thumb screws and 2 pins for easy removal. It is covered with padding and the black naugahyde. It is lifted with 2 18" actuators wired to a wireless remote located in the cab. The actuators came from www.firgellauto.com You can check out a video at http://www.youtube.com/watch?v=-HSCx8l93kw or pictures at www.crownmycar.com search for pickle .
Just got back to Forum. I used cedar for the frame and a cedar board to connect the 2 pieces of foam. This is where I connected the accuators. I'm building a boat now and I would probably use fiberglass over the foam.
would you mind posting up pics? i like your idea but havin a hard time picturing it.I made one for my truck with an aluminum "C" channel screwed to the inside of each bed rail and to plywood panels that slide into them. I bought some toneau material from an upholstery shop and stapled it over the ply wood. I put a locking tailgate handle on it and it works and looks great. Since i used two panels they are easy to handle and i can lay them down flat inside the bed if i don't want the cover on. Just make sure to seal everything up real good... mine is dam near waterproof.