Hey Jeff - it appears to me that you aren't loading the line quite as much as you might think. By 'loading the line', I'm referring to the amount of tension that you are building in the rope. The more tension you create, the higher you will go (as you probably know). However, it is easy to misinterpret 'speed' as 'tension' (or 'cutting harder'). I think that you are placing too much weight on your tail, which generates speed, but at the expense of line tension. Therefore, if you weight your board more evenly, you'll generate more 'tension', taking you higher.
I extracted a few stills from your video to demonstrate what I mean (see http://s1197.photobucket.com/albums/aa430/rickdic/
) - sorry the images are in reverse order.
Looking at 'approach', you can see that only about 1/2-2/3 of the board is in the water. While this is good, it could be better (i.e. more of the board should be in the water). The way to to this is to center your weight. Looking at your legs, you can clearly see that your right (back) leg is bent, while your front leg is almost straight. This is a clear sign that more weight is on the tail.
Next, as Jason points out, you might be flattening the board (and extending your arms) a bit too early. Compare the amount of spray between 'approach' & 'takeoff'. As you're riding up the wake, stay down a bit longer (i.e. stand up later). This will also help to generate more tension in the line, since by standing up (and extending your arms), you're releasing some of the tension that you have built up in your approach.
Finally, looking at 'landing', you see that you're in a bit of a wheelie. This results from the fact that "the way you land is the way you take-off". Since you're taking-off tail-heavy, that is how you land. One final clincher that points to an uneven weight distribution is seen in 'start'. Here, you can clearly see that the entire front of the board is off of the water. Naturally, this position is carried through the whole trick.
I had this same problem on my switch side. What helped me to center my weight was:
1. good toeside edge-out; make sure I'm evenly weighted before I even start the trick
2. make a conscious effort to weight my left (front foot), making sure BOTH of my knees are bent the same amount
3. look down the line at the ball on top of the tower; for some reason, this also seems to keep my weight centered
All in all, you look pretty good. I hope this helps. And to quote a good friend of mine, after you get these dialed, "learn them switch!"