The lifting mechanism is very simple.I used 1/2" pipe going up each side on the middle of the trailer,secured to the fenders and lower side wall, and another piece connecting the tops of each. Eyehooks were placed in the roof and a cable runs from each eyehook to pulleys at each top corner of the pipe to a small trailer winch mounted on one verticle pipe. Everthing is very light,trailer is 5x10 with insulated wall construction.
setup takes less than 5 minutes.It has a table that lowers to become part of the bed,and an area for cooking.
the trick is to measure the height of your sides so they fold up(height-wall thickness)
The workmanship is not the best as I kind of designed it as I went along,not knowing if it was feasable or not. But the design works(for me at least) and it is very light weight.Just another option for someone looking for something a little different.By the way,the pipes used for lifting and lowering are removed and stored inside the trailer when traveling.