I just compounded/polished my 2010 Camaro. As it is the only car I have ever polished, I didn't know about easy or hard clear coats. Most people say that a "hard" clear coat will require more section passes, but I only really took about 3 to 6 per area that I was doing, so I wouldn't say my paint was "hard."
All I used was my PC7424XP and Optimum Hyper Compound and Hyper Polish on yellow/orange flat pads and got wonderful results. A few RIDS I couldn't get out though.