First, I would step up the quality of your product. The products you have, like mentioned above, will not remove and swirls or marring. Contary to the belief of one poster, a PC can do great things once equipped with the right pad and product. I'm friends with the owner of Paintcare-n-detailing, there are a lot of good videos there!

I would try Optimum polishes as they have an unlimited breakdown time, which is really great for a newbie. What kind of pads are you using?