I had to throw in my two cents as well. I have used Protect-a-Tow for over 5 years now and have been extremely happy with it on pavement and gravel roads. It's simple and effective and works as advertised which is much more than I can say for the other products we had tried before Protect-a-Tow. My diesel exhaust exits out the rear side so it's not a problem but beware if you exhaust directly out the back of the coach, that may conflict with using Protect-a-Tow. If you're looking at buying the solid shield that mounts on the tow bar...check ebay first, at one time there was a few of them for sale for a lot less than retail.