To ilya:
the heelside turn: main trable it is hips position - underrotation. Start the turn with left thigh and controling the hips position - twist it.
The toeside turn: main trable - it is tilt in the turn. The soft snow is forgiving it. More angulation after initiation of the turn. The inclination and after angulation immediately.
P.S. sorry for bad english.
'Pump' - it is skateboard technique adapted to snowboard.
I'm trying to learn the race technique too (right rider)
PSR, please, let me some advice for correcting noticeable mistakes.