I have found that the PC will actually produce enough heat to burn the paint. I used a test panel, and simply applying two hands to the top of PC and not allowing the PC head to rotate, you can produce enough heat to break down the polish. After about 2 minutes, simply let off a little bit, and use the PC as normal. Now, you have caused enough heat to break down the polish, and use can now use your PC polishing skills to work the abrasives into the paint. (I too would recommend buying or taking a test panel from a reck yard. And trying this out first hand, if you don't want to buy a rotary)
Although there are other ways, like working in direct FL sunlight, at noon, seem to break down the polish pretty well. Not LSP ready, but its the best I've done with the PC.
It takes great amount of skill to break down a polish meant for a rotary. My next piece of advise; pick up a rotary. I've seen some on sale on various sites for around $130 for a PC rotary. This is the safest bet, for those "worse" case scenarios.
Hope this helps...
-Nick
