Unyali, I have always placed my straps like that and had no issues from 400lb atvs right up to a HEAVY old school Case garden tractor. I tie off to the same place the safety chains hook to on the hitch. If the suspension on the truck compresses, the strap gets tighter if anything. Backing up to an incline is a big help loading. The other thing is ramp design. Arched ramps are better, and there is no substitution for length. I have one set of ramps that doesn't connect securely where they rest on the tailgate. These only have 2 little "hooks" for the tailgate and are more likely to slip sideways. I bought another set where the "hook" runs the width of the ramp and is deeper. These ramps are rock solid when loading.