Even a picture of a successful unit would help. My dealer uses a manual dolly but then he has a flat paved lot to move around in and I have a gravel area, a small upgrade, and no additional strong bodies to help push and pull.
A front receiver on the TV would be the ticket but, unfortunately, mine is a Nissan Pathfinder and it does not allow this without considerable damage to the front bumper (if you can still call them that!) and trim.
My problem is there is too little manuvering room in front of the space to get properly lined up. Our Casita was only 17' and I am sure I will long for that many times later on (as far as towing and parking is concerned, of course).