I don't know about you, but my tires are well over $300 a piece. I'm not burning off any extra tread, by doing burn outs, then I have to... But that's just me.
Slight brake hold, and I find they require quite a jab of throttle (50-75%) to break loose since the Coyote has such weak low-end torque.
I think the Mustang's weak low-end torque makes the process trickier and harder to control once you're drifting, because you're at higher wheel speed than a car with more torque that easily transitions in/out of grip. I believe this is actually a factor in the Mustang crash stereotype. It's clunky to try to slide these things. They also have less self-steer (steering wheel automatically returning back to center in a drift) compared to other cars, so one can easily end up in an over-correction situation (where the car snaps back in the opposite direction of the initial slide).
Modern BMWs are probably the easiest to play around in because they have excellent stability control software which allows increasing amounts of slip angle, all while keeping it smooth and under control.