Google Trailer Toad. It is one of those wheel things that supports the weight of the trailer tongue taking all of the weight off of the towing vehicle. Considering all the miles we have towed over the years I have seen no reason to worry about the 10,000lb hitch as neither of us has ever detected any signs of stress or failure of the hitch or the sides of our motor homes.....You need to roll into a drag race facility on race day, walk around and observe rigs that tow thousands of miles every year without a problem. Look at the smaller units to get a real world idea of what works-----not internet "experts".