I went to see my girlfriend today and took a few fighting tracks from the bumper in between. No access to the power, so everything with my hand… The spot first with ONR cleaned, kneaded, short polished. After that completely with Kovax and 3000 sandpaper, then two rounds Meguiars Ultimate Compound on the blue Patzoldts sponge. Done! The grinding tracks went very well away from the hand (Renuault Twingo, about 8-12 years old). That it worked w ird (the removal of the tracks) surprised me… After the first lap polish the spot was still completely matt and then I thought to myself: “Well then Prost meal. What are you doing now????”. After the second lap the matte spots have completely disappeared. So – it probably also works with the hand, if you have no power…