Crashman,
Try this... Ski an entire run looking completely at the pylon. NEVER take your eyes off it. Start standing between the wakes with your sternum (chest) pointed slightly up to the ski - almost military at attention. Bend your front ankle and feel pressure of your weight on your front foot more than the back one. Now glide out to the side in this position (pull out). Get into the glide in this position, but pull your elbows in tight and squeeze the sides of your vest. All this is to just get your chest up and arms in. Now the fun begins...
While starting your first lean/wake crossing, think about leaning your shoulders away from the pylon, but point your ski across the wake. Thus, you will be somewhat twisted - feet pointed across the wakes, shoulders open to the boat. Again, keep your chest up, arms in, shoulders open, and eyes on the pylon as you simply lean away from the pylon. You should be in a very "strong" and stacked body position as a result of this. Don't look where you are going. Don't look at the wake, don't look for the buoys. Feel the wake, feel the rhythm, use your peripheral vision to just check proximity to the buoys.
This open shoulder lean away position is even more beneficial in your offside wake crossing.
Master this type of wake crossing, then start looking "down lake" during the edge change and throughout the whole turn. For example, while approaching 1 ball, you should be looking at 3 ball and 5 ball down course. Keep looking at them while your ski turns around 1 ball. Feel the ski complete the turn and feel the lean start on its own. Once the lean starts go back into the "look at the pylon" position. As you approach 2 ball, again look down course at 4 and 6. Keep your eyes up and looking down coarse as you round two ball. Don't look down at the buoy you are rounding. Feel it and only use your peripheral vision for confirmation. Keeping your head up during the edge-change and turn will keep your chest up.
All of this will help your hips significantly. The next thing you can add is to think about pushing your legs a little straighter when you are leaning. That will help, too.