I have Eastwoods glass polish and the deep scratch pad removal kit. My GF's '97 Cavalier has horrible wiper marks, sandblasting, and a deep scratch on the drivers side from a moron using the wipers without a wiper on the arm. I used the deep scrath pads on the PC, I had to use it on 5-6 to get it to do anything. It hazes up the glass but did make the scratch better (not clarity). I didn't have the time (or courage) to work it long enough so I did not remove the deep scratch, just made it better (I would use a rotary instead of PC). I then had to use the rhodite polish with an electirc drill (1200rpm max). This is a PITA to use since the felt polish pad it comes with is 3-4 inches in diameter. I had to reef down with just about all my weight to keep it flat on the glass and not spin all over. It did clear up to glass but I should have polished longer to really make it shine. I couldn't because the drill was so hot it was burning me. :scared:
Bottom line: A brick through the windshield with full glass coverage would have been smarter :clap: I suggest you weigh your options.
I used the polish to remove water spots on my windows on my '01 VW GTI with my cordless drill and it worked great. I am going to hit it again with the corded drill before I apply aquapel to the glass (The polish will remove the aquapel). The cordless drill runs through both batteries fast when you are using a ton of pressure.
I have decieded I'm not messing with deep scratch removal in glass anymore, at least not until I have a rotary. I am going to try to polish with the electric drill on my rear window to remove wiper haze, will post back how well it works whenever I do that.