I have a lot of minor scratches in the windscreen on my new car that i'd like to remove. I think the previous owner must have used a hedgehog with a brillo pad hat on it to clear the windscreen. (probably just an ice scraper.) So I'm looking at 1) Special glass polishing compound and a drill attachement. 2) Stone chip repair resin and an applicator. 3) Brick and doing an insurance job! I wonder which will work best. Are there any polishing compounds out there that will do what I need it to, remove the light scratches and scuffs?