That's the configuration I've used since I got the game. Unfortunately, my square button is flattening out; the gas briefly goes out a bit randomly while I race. : (
Dunno... I hate Sony, so maybe.
AA, my Cross button has been cutting out like that for quite a while, so maybe I'll try the configuration you use. I won't be able to use rear view though... LOL
With the standard configuration, I take my index finger off the right airbrake and press Triangle.
The thing I hate about Pulse is the absence of tail slide. In Pure for example the ship tail slides very well putting me in an effort to make the ship stay straight in the exit of the curve. That makes me more imerse on the game than Pulse makes... And if we go to Wipeout 3 it's even harder to corner with the airbrakes...