I found
http://ecomodder.com/forum/showthrea...ign-18585.html, but is the New Beetle trailer a new announcement? Because this is, as they say, relevant to my interest.
I will repost this here:
Simple curves, but approximates to The Template. The door is moved to the truncation so no extra framing is required on the side. Built on a 4x12 sheet of plywood. The frame is copied from the 1952 Silver Streak I used to own, a Central tube, C-channel crossmembers (each with a carriage bolt at the ends) and a strong connection to the wall so the whole thing is s stressed monocoque.
For a 5th wheel, you could have a curved arm to the hitch:
Instead of exposed wheels like a teardrop, maybe follow this with curved side-boards:
The rear entrance again.
/I don't even have a trailer hitch.