I'm not very good, but....
The two keys on either toe or heel side are line tension (which you keep up by holding your edge) and not absorbing the wake with your knees.
On your vid, from both sides, you flatten out the board a bit as you go up the wake. This lets the line tension go and you get no pop. You have to hold the edge all the way through the top of the wake.
When I went to the boarding school they had me practice a script to make all my wake jumps the same. First cut out as far as possible. Then while the rope is a little slack, set up the handle and body position. As the boat starts to pull in to the wake, begin to edge. The closer you get, the more you edge. Don't let off till you are in the air.