Mark,, after many years of towing, one one way i do it,,
4 straps, one each end of the chassis rails, strapped down hard, very near to the bump stops, never lost a strap yet !! Then attache the trailer winch wire as a safety, You now have no where for the body to roll, come the first corner
Only ever use wheel choker straps when have a rally car in the race shuttle, for the front wheels, only because of lack of access to the front,, rear is still strapped to the body,