milehighjc. Looks like lots of boat waves on that lake. Pretty difficult to do anything but cruise around. Also a big wake to cross behind the boat. But since you asked....
If your goal is to do big slaloming turns back and forth behind the boat, I notice that you ride a flat ski going into and through the wake, stand up, cross the wakes and then do a bigpull OUTBOUND from the wakes (in a pretty nice strong position). Then you do a turn that you cut short/stand up out of, do a brief pull before the wake again, stand up and cross. Then hang out there in a pulling position OUTBOUND from the wake.
I like the idea of practicing wake crossings. Take that strong position you feel when pulling out away from the wake, BUT DON'T PULL THERE. Instead, cruise out wide of the boat and coast for a few seconds.... keep elbows tight to your vest, hips pushed forward, knees soft not straight. Think of keeping your shoulders square to the direction the boat is going. Then point your ski TOWARD the wake and GO. If you keep that strong body position and ski on edge, you should squirt across the wake. As you get through the wakes STOP PULLING. Let that speed carry you out to a gliding position on the far side. Coast for a few seconds, check body position, point and go....repeat.
Coast, Squirt, Coast. Repeat a dozen times going each way until you know what that feels like. Then repeat another 2 dozen times. Ski three times this week and three times next week. Skip focusing on the turns for a bit. Slice and dice. Point and go.
A ski on edge will tend to slice instead of jump the wakes - your knees will need to absorb some bump, but keeping the upper body square and strong lets the legs function more indepently both in establishing edge and angle to the boat, and absorbing the wakes.