Hi Tim,
I towed my car with the body cocked to one side to a VIN inspection. I used a car hauler from U-haul for like $35 for half a day. They gave me (4) straps that went over the tires keeping the car from moving forward's or backwards. For added safety, I used 4 tie-down's, one on each corner of the frame keeping it from moving sideway's. The Tie-down's were completely unnecessary but were added to keep the law from wasting my time to have a look and asking a bunch of pointless questions.
Regards
Bill