looks like your letting off a little before you release off the wake. Keep that edge strong and start further out if you can (couldn't see that part).
I like to croutch down a little and then stand tall when I release of the wake TS and HS. For TS tho, you need to not be afraid to get a little over your front edge as you are in the air. That keeps most people stable. Better yet, try and grab the board indy. It helps a little.
good luck and have the camera man follow you. It looks a lot better because you can see the entire trick from start to finish.