A single wheel trailer would work well in this instance. Based on my experience with my single wheel trailer project, the maximum length from the centerline of the rear wheel to the rear of the trailer is about 12 feet. It's important to have the two attachment points fer the trailer on the car as wide as possible to minimize induced yaw and roll. With proper bracing, you can bring the attachment points fer the trailer out from the car to about two feet so you will enough clearance fer the front of the trailer from the rear of the car as it pitches up and down. Upper and lower gap covers can be attached to the car and be very simple to allow fer the trailer pitching up and down. Since yaw and roll is almost completely eliminated, side gap covers can be close contoured to the car and be fixed in place with minimal need fer movement.
