Do what I did. Go to pep boys and get factory looking mudflaps. $19.99
If you have a chevy there is one hole in the rear fender already. Just put one screw going into the mudflap instead of making a hole in your truck. The cruz on down to the chp office and have them sign it off. the ladies in the chp office are braindead. They will sign off anything. Then go home and take them off. But keep them for the next time a cop needs to fill his quota.
Pisses me off too