Hi Dan,
Aloha! I second the Novus. They also sell these at your local plastic store like Tapp Plastics. (You can find these in the yellow pages, they make acrylic covers for memorabilia collectors, businesses, etc.) I bought mine at the Container Store in Chicago. It is easy to use. I believe you apply #1 on the deep scratches, and #2 on shallow ones, and then #3 to polish it off. Works great!