you might try edging all the way through the wake as hard as you are when you first start to edge, it looks like you let up significantly, you might also try to pull the rope towards you a little more to load the line, when you land it looks like you're just not quite rotated enough so try those two things and practice practice practice man, it looks like you're really really close
also, the slow motion part of the vid is hilarious when they talk..
best of luck