I tow my Prius on a KarKaddy Car Dolly by Demco, I have had no problems with anything on it. I like the surge brakes for the simplicity of it (no hookup, just works).
If something happens to the Prius I can get another car and tow it without modification if it is a "normal" front drive car or another Prius.
AND when I get where I am going I unload and I sight-see with the Prius that costs less to drive than my motorcycle!!
I have never had a problem from any RV Park concerning the Car Dolly, if I do I will just excuse myself and go elsewhere, in my MOTOR home, it moves!!