Has anybody tried to build fold down beds in an enlosed trailer? I know MX727 had a bench in his, and we're looking at something along those lines (loosely) but actual beds. Preferrably 2, like bunk beds. Here is a picture from haulamarks website that shows pretty much what we're looking at doing http://www.haulmark.com/interior/ES.JPG (bottom left). Anybody built something like this? Anybody tried? Thanks for any help you might offer.