Pods8, I will take any pictures you would like, just let me know. Better yet we are not that far apart that we could come down your way some weekend and you could look at it yourself.
I will be replacing my rear wall this winter and will know a lot more after that. We bought ours used, but just one owner. He had one of those electric boat lifts installed on the rear and it cracked on both sides just above the door. I think that it would take a good sized boat and still lift it but the boat lift itself was just to much. I have been though the factory and watched them being assembled. I also have a full woodworking shop so it should not be a big deal. If you like building and have a good shop building your own is not out of the question infact it might just be fun. Cheers
If you get a chance some general shots of the flap system open & closed and same with the door (esp. the differences in the top & bottom) would come in handy at this very early stage of brainstorming (sometimes seeing things quickly points out geometrical issues that don't pop into the head right away).
If you're ever heading down already at some point sure I'd love to check it out but I wouldn't go out of your way at this stage.
I like building and its half the fun to me. My only concern is never having designed or worked with foam sandwich fiberglass, resin, epoxy, etc. which I'm doing my homework on currently. Don't want to dive in and be over my head and either scrap the project or have something I'm unsatisfied with.