I didn't watch the whole video, but the one thing I noticed that was consistent with 90% of the shots is that you're falling off at the release.
I used to have the same problem, here's what I did:
- Moved up about 1-2 feet on the approach.
- Took slightly smaller steps, slow them down if you have to.
- Focused on having a completely "loose" armswing.
Step one was done to achieve step two, slower and shorter steps gives you less of a chance to lose balance. Step three was done more or less to try and promote a consistent shot. It took me a session or two of practice to get down, and my scores haven't been dramatically effected. But I am finding myself throwing the ball a lot better on the sport shots.
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