Yeah, I only suggested that because I have carried a few hundred lbs of crap on a hitch carrier before, both with and without frame plates(from demello) and I could tell a difference when it comes to frame flexing. Without frame plating, my truck felt like a diving board flexing like crazy at every bump on the highway. With plating it still felt like a diving board, but a more stiff one(same weight). So if he plans on carrying a bike in the back like that, I(and I'm sure demello) will suggest to plate the frames. But I agree, ask Demello about that.