Also, if you feel you are pulling all the way, but folks still say you "stop pulling before the wakes", it could be something I learned: The earlier you pull/lean really hard, the earlier you can get pulled back up over the ski. Learn to lean VERY, VERY progressively (i.e. a lot slower than you think), especially into your gate. This gives the ski time to set angle and keeps you from falling back on the tail. For a 30mph and 15-off skier the progression is FAR slower than you imagine, and seems WAY slower than any pro video (even Seth Stisher's 15-off vids).
It helps me to think of the rope a bit like a bungee cord: It's going to pull back sooner or later. The harder/quicker you slam down into the lean, the faster/earlier it snaps you back up and over onto a flat ski. If you're extra tall and light this is even more true.