Towing my enclosed motorcycle trailer behind my Class A

I have a friend who frequently tows a 6x12 enclosed with a diesel pusher. He NEVER backs up with the trailer attached if precision is required. Usually he borrows a vehicle from someone else at the campsite to position the trailer, or uses his wife's VW Toureg. One time he used a golf cart. At home he unhooks in front of the house, and parks the trailer with his pickup truck.

If you can't see the trailer, you can't back up, period.