Took a trip to and thru Alaska with 2 other motor homes,we all 3 towed, 2 jeep Liberty's 1 Jeep renegade or what used to be a CJ. I had no skirt on my MH, there was one with the grass type skirt and one with the solid flap type. Cant explain it but they both had more stones and or rocks on their toads than I did. Both also had more windshield damage[minor] than I did.I did have protection for my toads headlights. This was my 2nd trip to Alaska, didnt have a skirt either time.