[Mesa]

FYI - 3M transparent film comes in many thicknesses, the stuff now being promoted for front gross protection of bumpers and hoods looks relatively nice if applied professionally. But is not up to the task in areas you are concerned about. For that you would need a "stone guard" film which is much thicker (commonly seen in clear on the front side of some 911 flares and 944 fear flares). This film can take much more abuse although in the end it might start looking shoddy after many years and miles.