tow dollies suggesitions not criticism

I have an Acme tow dolly and it has worked well. This one you leave the steering un locked. The best thing I have found is it seems nearly impossible to hit the car with the fenders when you make a turn. I have turned about as sharply as possible with it hooked up to the MH and no problems. I was just in a campground in Main and this coach came in towing a new Pious, he had a hard time getting around and dragged the tow dolly badly on a little hill. I was out walking the dogs later and noticed he had dented both sides of the car. It appeared as he had turned to sharp and the dolly had made contact “heavily” with the sides of the car. I didn‘t get the name on the dolly but it was in the style of the demco.
Bill