I'm thinking to hang about two feet off the back of the trailer. I figure with a more basic galley, and using 2x4's for the floor framing it should be ok. What do you think, is this going too far? By the way, I'm also thinking of going 5 feet high, rather than 4 so I can have a little more headroom.
I have another question about the construction of the floor. I'm not sure if I got this right - coat the underside of the floor with roofing tar, install the insulation, then put the insulated side down. What is protecting the insulation from road debris and water, or am I forgetting something?
Thanks a lot for any answers!