Your putting words in my mouth I didn't even say. I NEVER once said I use only an extender to haul my motorcycle. I said it HELPS to have one to prevent it from rocking back IN THE EVENT your tow straps come loose or loosen up. My trips consist of 400+ mile trips, and of course I strap everything in correctly I've hauled more bikes than your age, but I also don't drive with my eyes in the rear view mirror 100% of the time on long road trips, which are mostly at night. As far as it being structural, if you knew anything about physics you'd know that when the bike is in the back of the bed, its center of gravity is full forward, not full aft, so the structural loads are no where near the rear of the tail gate. The straps hold the bike in place, the extender is just an added margin of safety.