Just wanted to give a shoot out to my good friends at SmartFilm. They have worked on all my cars: Audi TT Roadsters, BMW Convertible, Scion FRS, and most recently my Porsche Boxster S. They really do great work on clear coats as well as tint.
But my new advice for you is to use their new product SmartShine Auto Detail Spray. I wax and wash my cars very often. But their are times I want to add that extra shine. The Detail Spray does that. It makes the car look like it is fresh off the show room. I highly recommend this product. Nothing I have used before works as well as this. It works great between washes to add that great detail shine your see at the auctions.