I recently posted a video clip of my younger son, looking for advice which - as always - was excellent. One tip I received in a PM was for a professional pitching instructor (House/APA/JUGS team etc) who does in-depth video anlaysis. I can't tell you how much this man's evaluation has helped sort out all the moving parts of my son's long-limbed delivery. Best money (and not an arm and leg, either) I have spent on getting things figured out, especially as I'm in a locale without an in-person instructor. I won't post a link or anything because I don't want to violate Julie's advertising policies, but if you're interested just shoot me a PM and I will give you the info.
Krak
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