Crashman
I feel for you buddy!
As my name suggests I have been struggling with the same issue for a number of years. I have spent years having short spells with my skiing when everything goes well, when I can get stacked and make reasonable offside turns and my bouy count goes way up and then bang! its all gone and I can feel myself being dragged around the lake unable to get free of the boat and get my hips up again. The trouble is I've never really been able to isolate what it is that makes the difference.
However, I had some great coaching in April and a few small things have finally sunk in to my little brain and seem to be working.
The first and most glaring thing I see in your video is that you start your turn in for the gates with your shoulders - this just leaves your hips behind you and once you get under load in that position it is just impossible to get your hips up and carry out any direction to 1 ball- in effect you are now just a passenger and the problem will stay with you all the way down course.
In my experience, you should just try and keep it as simple as possible by doing the following:
Stand tall and "in line"on the balls of your feet, stay over the balance point of the ski - getting your hips up does not mean leaning back!!
When you make a move- either pulling out for the gate or turning in just concentrate on moving your hips forward and over the side of the ski where you want to go first (alternatively just think of starting the turn with your feet) . The important bit is to ensure that you start all your movements with your feet or hips and that you do not fall backwards on the ski. Your shoulders and upper body must not start any movement or lead at any time. Try to keep your shoulders level and open (pointing directly down course) for as long as possible -you could think about holding your outside shoulder back.
The important thing to remember is that you cannot get your hips up by trying to get your hips up- it just does not work like that. Think about separating your lower body from your upper body and staying "in line" and over your feet at all times.
If you do this correctly, then you will swing out fast and light with your hips connected to the handle, you will be tall and free and remember why you fell in love with this daft sport in the first place!!
Good luck and keep the faith.