I've found that any attempt at pure pursuit is going to get you killed, 9/10 times. Lag pursuit is key and then whenever you go in for the kill, you need to lead a great deal. this is when you use the 30mm, though. I try to shoot with 20mm only, at least until I get in close enough for taters.
The wingover, snap-roll and yo-yo are the only maneuvers I'm almost always comfortable with attempting.