All good posts.....CAGIRL - please update us when he is throwing a ball from the mound, be interested to see the results. As BOF noted, the stride is often confused as it relates to how it happens, many actively try to stride longer by reaching out with their lead post leg, this is not ideal. The stride (whatever natural length it should be) is a result of power, or momentum created out of hand break...it is a "non-teach". When young pitchers try to reach out with their lead leg, or are out of control lunging towards home, you normally find problems.