Some 40 years ago I was towing a heavy car with a gas motorhome (didn't know better) and my brakes overheated. I was able to get to a pullout safely, but I traded the brakeless dolly for a dolly with brakes. To me it is not so much the brakes as the break-away safety. A few years ago the baseplate separated from the Saturn and my car slowly passed me on a less traveled road when I stopped for a light. It was just a short trip so I didn't hook up the brake. (wont do that again). No one hurt, just damage to the front of the Saturn as the grill was ripped off. If this happened in traffic I fear the outcome.
JMHO