I have a 6x12x6ft tall enclosed trailer, and find it almost ideal for towing with a newer 1/2 ton Chevy pickup with 5.3L engine. I have barn doors, but would like to add an OPEN SCREEN ramp, so that I can wash off the bikes with the pressure washer outside, but not sitting in the mud. My vision is this ramp will slide under the floor, and allow the barn doors to be closed with the ramp out (no mud sprayed into the trailer when pressure washing).
My current trailer will fit in my garage at home, which is a huge plus for me. I just open the barn doors, and then back it in. I can work on the bikes, etc, with the trailer in the garage.
If I sold this trailer, I'd get eight a 7 x 14 x 6ft 6inch tall, v-nose, with a diesel 3/4ton pickup, or I'd get something big enough for a Jeep and bikes to go behind the motorhome.