I have been using a tow dolly for the last five years. It is a Master Tow with surge brakes that I bought used. The only problem that I encountered on the 1st use was the bottom of the front bumper made contact with the ramps. I had to bolt half inch plywood to the ramps for clearance. No problems after that. I think the problem is the dolly has 16 inch wheels and short ramps so the incline is steep. Newer dollies may not have this problem. You must line up the wheels and then proceed up the ramps slowly to the stops. Once set on the dolly put the straps on tight, put the gear shift in park and release the parking brake. Check straps at every rest stop as they tend to loosen up.