Don't be scared of it. If you start out at a lower RPM until you get the feel of it you will have more time to react to it trying pull you all over the place. It took me most of the hood to start to get comfortable so thats 4 passes over a pretty big hood. Using smaller 6" pads will help as well I found the 8" pad would drag me all. Once you feel like your getting the hang of it just up the speed a bit. Each time you change surface I would lower the speed. I went back to about 800RPM when I started on the C pillars, doors bumpers etc each pass i upped the RPM a few 100.
It's not at all what I expected I thought I would spend the entire time scared to death that I was going to burn the paint. As long as you keep moving and watch your speed you will be fine. My Rotary has a trigger that operates like a throttle no the on off that the PC has. That makes it great for cutting in and picking up product.
Like anything in life your not born with experience that you get by doing so get out there and try it.