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I would put straps around the trailing arms close to the shock absorbers and cross the straps to prevent lateral movement. In the front, around the a-frames and also cross the straps. A fifth strap from the cradle in the front to the tongue of the trailer. But I always go overboard after I lost a newly painted Camaro off of the trailer when the chain hooks came loose. Luckily it was when leaving a stop light on the way to Indy to race.