This is probably the best stuff I have used to take out heavy swirls and deeper scratches with. I have used this with a rotary with a wool pad to get out heavy swirls and the random deeper scratches at the same time in about 4 or 6 passes at speed 1600 to 1800 RPM with some pressure on the first 2 or 3 passes and just the weight of the machine the last two or so.Used it today with a foam cutting pad on the rotary at a speed of 1400 to 1600 RPM used the same 4 to 6 passes as above. Got the swirls out and finished out pretty good.I have also used this with cutting foam pads on the dual action polisher and it removed heavy swirls very well. Just not so much with the deeper scratches like the wool pad did, at least not without doing more passes with heavy pressure. Still used the 4 to 6 passes with heavy downward pressure for the first 3 passes and light pressure on the last 2 or 3 passes. This actually finishes out pretty well this way with very little need to use a polish afterwards.Im pretty sure you could finish out very well with this even by using it with a polishing pad for real light swirls ... just finish of with light pressure for the last couple or few passes.Being that this compound uses SMAT abrasives (the abrasives dont break down) this allows the product to cut really fast and allow for fewer passes than compounds/products that use DAT abrasives (abrasives that break down with more passes). Which of course will save you time and effort.This does dust up using the wool pad quite a bit.. but that is usually from having too much loaded on the wool pad along with the heat generated. If after a few passes you feel like its a bit dry you can mist the paint area with a little bit of water to reactivate the compund and do a few more passes. With foam pads I dont have near as much dusting when used on the rotary ... on the dual action however it will dust pretty good. But the dust doesnt ever hurt the paint finish or the performance of the compound.This is a great compound to use in a variety of ways. The method depends on your level of defects, paint hardness, and what you condider good enough.