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Could this be a new joke? How many inverted arms does it take to change a light bulb?
Taro, those are great points. I honestly think that the foot strike leads to the strong body rotation with the arm following. In this way, much pressure is taken off the arm. Do you remember a guy like Keith Foulke? He seemed to use his arm too much to throw with. Sometimes those guys can have the right slot, angle, etc but do more damage.
Can you figure with the video instruction to look at slomo, etc, how do people end up throwing so many ways?