Our MH had both a rear full width flap on the rear bumper and a flap behind each rear dual. I wasn't happy with some rock chips on the toad so, after reading some posts on this forum, I took off the bumper mounted flap. At first I was happy with that but then I realized that the toad was covered with dirt etc. and the headlights and windshield were getting sand blasted and I had to wash the windshield to even be able to drive it. The rear flap was so low that it could drag on the road if I went up an incline so I cut about 2 or 3 inches off from it and put it back on, it is now about 4" off the ground when setting level. I haven't had anymore trouble with it and the toad stays much cleaner. I think a "protect a tow" mounted under the tow bar would be the best protection but I haven't put one on yet. It is on my want list.