Micro Mart sells a polishing kit that includes several grades of micro sanding papers that you use to work seams, scratches, and as I found out recently, helps remove paint off clear parts as well. The key to it is "polishing" with the sanding paper in one direction (left to right) then change up to the next highest grit paper going in the other direction (up and down). Then right to left again with another higher grit. And then up and down again with yet another higher grit, etc, etc...There are I believe six or seven different grits with the last feeling almost like silk. The final step is a compounding solution, with the consistency of Elmer's White Glue, that smooths out and fills in any micro abrasions left behind by the sanding. I've used this kit once and was pretty impressed with the method. Take your time and you can always re-apply your steps to get the canopy/clear parts looking the way you want it. Which is better then if you had left it alone with a gash mark on the windshield.