Just got done watching Tricks of the Trade. I think Mr. Hillhouse just released the new gold standard for the technical aspect of pitching in general. I would say it is a must have for parents teaching their daughters without the use of a pitching coach and a good aid for those that do.This is the basic fixes for all aspects of the pitching motion from beginning to end. Very good info. I didn't time it,but I think it was under one hour.