You do not need to wet sand water spots, scratches, or swirls. Wet sanding you need to know how; because it's very easly to bust the clear coat. Here is what I do frequently porter cable 7474, lake county buffing pads, 3m perfect-it II rubbing compound, 3m #390009 for dark colored cars perfect-it II glase, Zaino Z-pc fusion, Zaino clay bar. I use all Zaino products. You do not need to use dawn but the first time after that Zaino Z-7 car soap. Clay you car that should take about 6 hours or so use a lot of lubricant empty Z-6 spray bottle quarter cap Z-7, clay will scratch if dry wipe off as you go make sure the area is smooth. After completly claying your car wash car with Z-7. Then use rubbing compound with either a yellow or orange cutting pad after that wash car again. Then use the glaze with a white polishing pad or black finishing pad after that wash car again. Then use Z-pc fusion with a white polishing pad spay pad down frequently with water. Dust car down with a Ca duster then Z-6 entire car. Then you can Z-2 spray applicator down with Z-6 a quarter size sopt of Z-2 will do the entire front end i.e. hood, both fenders & cap. I spray Z-6 frequently on applicator. 1 oz of Z2 with ZFX you should be able to put 3 coats on 2 cars. This is very time consuming, yet proper preparation of paint is a must. I have buffed my 2001 for 12 hours today & now I am ready to Z-2. Swirls are going to happen if you drive you car all you can do is control them.