This is really confusing for people including myself but I'll tell you what I've come up with.
People say, dont bend at the waist, slightly bend at the knees, keep the line tight, stand tall at the wake.
BUt, in order to cut HARD into the wake which you HAVE to do your body position takes you to a seated position like they tell you NOT to do.
THen, go watch all the videos of the people/pros and guess what, they all cut with a seated position because thats the only way u can heel side if you want to cut HARD.
Now, we got that out of the way, when I approach the wake, my knees are very bent and im very crouched down because im trying to pull the tower down as some would say, only pull this hard a few feet from the wake.
Riding up the wake, they say stand tall, this is the part that confused me the most. I would stand up tall BEFORE the wake which then would take me off my edge and my pop sucked.
Now, I stay mostly crouched in the full pull down the tower super cut mode most of the way up the wake and then.......... JUMP or some will tell you push off but to me its really a jump in a wierd way.
Your line must be tight the whole time, and this gets me 6' air on a OUTBOARD MOTOR with a FISHING BOAT with no weight added, heres a pic, tell me what you think. http://www2.freepichosting.com/Images/55085/0.jpg