Have an Ultra-Guard in shed that I used w/ '03 & '15 truck and old coach. In addition, we too had flaps on truck to which I added "extensions". Basically, bought a black pair and cut them and added 5"-6" to length of flap. new coach and the UG won't work cuz it would hit front of coach while turning due to non slanted front storage compartment. Now w/ '17 truck, this too has flaps and will be adding extensions to them as well tomorrow. Will say that any form of protection you go with it better than none at all.