I designed it so the width is approximately the same as my handlebars with bar end mirrors, so about 36". The length of the bottom half is 86" and the top is 96". The frame was 27.5 lbs before adding the body. I have pulled the bare frame around through the neighborhood and it adds some drag but it is not bad and pulled straight.
When I started, I had no idea if it would work, but I took pictures and video. As of today, I have not completed it but it is ready to try an overnight sleep in it.
Here is the start of the project, the frame. It is based on the Paul Elkins style frame, but narrower.
Solar Bike Trailer Camper Frame
I am using cheap kickstands as the trailer supports while sleeping in it. These are marginal, I think they work but don't have a lot of trust in them. If anyone has ideas for better supports, I am interested.
The 1" x 2" frame pieces were reinforced with fiberglass and epoxy at the joints. They seem to be strong enough but they flex. I think I would go with 2" x 2" on the long rails next time.
I need to find another way to get a towing arm, I don't think my self bent aluminum tent pole will last when the trailer is loaded.
My pictures seem to be too big to load.