My 18 foot boat is trailered 2X during the boating season-to launch and haul only.I store the boat in my driveway during the off season. The trailer is towed by my 1991 Taurus. Every year, when I back the boat into my driveway, the bottom of the hitch <br />scrapes along and gouges the surface of the drive way apron. Pulling out of the driveway is no problem Any tricks on how to alleviate this problem without breaking and reshaping the driveway apron?