Update.
Bought a 3 part polishing system by Novus. I didnt use the #3 heavy polishing part. Also bought an assortment of foam buffing pads that were probably assembled by a 6y/o in China. Amazon can be a wonderful thing.
Moving the bike to the shade, gathering tools, making coffee, charging the drill batteries, I spent about 3 hours. The windshield isnt factory new clear, but it is immensely improved. If I spike the coffee with some whiskey and spend another hour, I could probably get buff out the remaining blemishes. However, the area I couldn't get to shows up dramatically next to the polished portion. But that would require removing the windshield.
Onward to the next project! :)