Search for Seth Stisher or Gordon Rathbun on youtube. There are some drills. But mainly learn proper stack and just imagine skiing in a course. I'd suggest on pull out try to simulate gates by getting a consistent repeatable rhythm, like start at the same place each time out side the wake, Pull out for count of like 3 or 4 (what's comfortable for you). Get a comfortable glide count, then go and start your turn in just like you would for a gate. Then try and do 6 to 8 turns and start over.