I used my Griot's 6" and 3" dual action (random orbital) polishers starting with a 3000 grit sandpaper pad and working to the right through the products below:

Not all of the water spots were removed since I didn't want to risk burning through the clear, but the paint looks much better:

iPhone driveway shots:






I'm happy with the end results, but it was a lot of work. That rear wing might be iconic to the 93, but it's not much fun to polish on/around/under!