We do not advocate the use of load distributing hitches on boat trailers. Part of the problem is the concern with brake interference. If improperly adjusted, brake performance could be degraded. The basic premise with a weight-distributing hitch is to transfer load between the frame of the tow vehicle and the towed unit. In effect, it can serve to lock the two frames together. The wishbone design of a boat trailer, in conjunction with the use of a load distributing hitch, places a disproportionate amount of stress on the tongue member of the boat trailer frame. The tongue, already the most highly stressed boat trailer frame member, is then required to perform above its design parameters.