I learned through the tips on the X here and mostly by myself out on the Lake for a week while I rode my STOCK 04 for the first time.
My suggestions:
1. Work your setup wake out so you hit it from the side not head on. Usually in that case you will plow into the wave and get minimal height.
2. Practice Practice Practice your approach and timing coming into the set up wakes. It does no good to set up a wake and not use the wake to its full potential in your trick.
3. as you get to the wake pre hop and kick rear of the ski somewhat to the left almost into the set up wake.
a. This gets your pump dug into the water
b. Gets you full brapage as the ski was temp. out of the water allowing the motor to max RPMS.
C. continue having the ski pinned as you launch off the set up wake throwing your body over your head over the left side of your ski.
4. Commitment- Everyone is terrified of it.
but really you have to get the mind set of WANTING to eat Sh*t when you throw your head over your bond line.
5. As you throw your head over, this whole time your handle pole should be on the hood, Bars cranked, still pinned, knees bend and body as low as you can get it sucking that tray as close to your ass as it can get.
The most important is throwing your head over and really committing.
You can almost have your head between your chin pad and bond line in front of the bars. Its not so much shoulder work as you think. When you use shoulders to brute throw the ski over you will look like your doing really awkward nose stabs.
You can watch this Video of me on my 4th day of riding my Stock 04 superjet from Wamilton. I had the advice in my head from the X, but its all about applying what you learn and really forcing yourself to find whats going wrong in mistakes.
Flat Water Rolls
Hope this helps.
-Mark
http://www.youtube.com/v/LiAm6TdHUVA&hl=en&fs=1
. So hopefully if I use a set up wake I can make it all the way. 
