I haven't used a wheel in a while, but am thinking about buying one because hand waxing my car is a pain in the ass. Anyway, I want to buy an Orbital model so I don't burn the paint, but someone told me not to. How much pressure would you need to put on the wheel to burn swirls into your clearcoat? (I'm not asking so I can do it, but so as to know how delicately to hold the wheel.) Thanks for any info.