I always add the caveat that I'm not very good.
@vtmecheng I was given the same advise. Shoulders back vs hips up just made so much more sense to me. If you put your shoulders back, you're hips come up. There were some other cues Corey offered that made it less chaotic, but for those that haven't, go pay him a visit!
Another thing that seems to help not concentrate on the wake is simply look at the next buoy at the exit of the turn. Otherwise, I feel like I look at the current buoy, then the wake, then the following buoy. Much smoother with one focus point earlier. I have bad habits from skiing behind big boats as a kid, and this helps.