You put a good friend in the car with a six-pack and a couple bags of chips. When you arrive at the destination, you open the rear door, wake him up and let him back it out!
Actually, I had my then 11 year old climb in and out of the car when I took P1116 to the GT40 reunion in 1989. He doesn't fit like that anymore...............
Some trailers have doors over the wheelhouse to allow you to open the car door, but the winch thing works well.