I have had a couple of cars that have not come out like I wanted. One example; this truck was used for hunting so you can imagine the tree scrapes and everything going down the sides. I used a yellow wool pad with 3m finesse it compound, took all the marks out. next 3m swirl remover with 3m black, looked like I was headed in the right direction; next 3m ultrafinna with there light blue that goes with it. Finished with Autoglm's Sealcoat. Looked great but there with still some swirls or maybe you could it halograms or micromaring? not sure. The average person would not see these things, but I don't want to see a single line. By the way I used a circular polisher. Not enough working time on the polishing stage, or too much time?