TSR3.0 is a very solid polish. With a PC, you'll want to use speed 6 and the smallest pads available. A few pea sized drops of polish is a decent amount to use per panel and the product will become translucent when it is sufficiently broken down. I have used a wool pad on a PC to remove sanding marks before and it was successful at removing the deeper defects. However, keep in mind the wool will leave additional micromarring that will need to be removed with a different pad and polish combo after. Remember not to apply too little or too much pressure to the machine and do slow overlapping movements. A good way to gauge if you use too much pressure is to see if the pad stops rotating. Paint a line on your backing plate to see whether or not it is spinning. Too little pressure simply won't yield any nice results. Over time you'll get more comfortable and find the happy medium. One final thought, without pictures of the swirls it is hard to say whether or not a polish and pad combination will work or not. Almost every vehicle has some deep random swirling which is going to be almost impossible to remove, especially with a PC. These swirls should be treated as scratches and keep in mind that some deep swirls are better than removing too much clear and having CC failure a few years down the road.