Transportation Grade Gel Coat is tough but if a rock chip does happen its relatively easy to repair. Matching color is not a problem even several years down the road because of the added UV protectant in our Bright White Gel Coat. We do suggest some type of mud flap on the tow vehicle to help prevent rocks from being thrown against the trailer. Airstream offers a rock guard on some of their models but the aluminum will become dented by rocks over time. These dents will be much larger and more noticeable than the small chips that could potentially happen to the fiberglass (our travel trailers won't dent) even in large hail storms. For this reason many insurance companies charge higher premiums for aluminum trailers. One other suggestion would be to look at 3M products website. They make a product called Clear Mask that can protect the front of your trailer and is easy to replace every few years if needed. The bottom line is anything can happen and if you travel the ALCAN HWY chips will happen but can be fixed easily and at little cost. However most of our customers have had little to no problems with chips in the fiberglass. Please look to our forums and ask actual owners about their experiences.