My opinion, I'm probably wrong, but this video shows nothing but flying faoff among the asteroids. The haphazard tossing back and forth and the pile of asteroids keeps the player from getting hit.
That may be so, but if I tried that with FAOFF and permaboost I'd either run full smack into asteroids every couple of seconds or be 5km out of the ring before I could react.
Still I'd also like to see a video how this flying style is used for offensive purposes and bringing those rails to bear.