Another option would be to have somebody capture some video on league night and then show that footage to your coach and see what they have to say. Unfortunately the side view tells a lot and would be virtually impossible to shoot on league night, any chance you could get some side view footage from open bowling?
This would be a relatively inexpensive way of your coach "watching" you on league night, then again if your coach is willing to be there in person for a reasonable price that I suppose would be ideal.
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