I believe the shoulder work is uncousoius as well, when I tell my arm to stay bent, the shoulders has to drop. again being that the right hand indirectly controls the legs, hips, and body and shoulders. But I am athletic, I know how it can be difficult to teach some people to not "throw like a girl" (I know some males that can't do it either and for lack of better term, you know exactly what I mean, that horribly uncoordinated motion they call a throw). So maybe for the uncoordinated out there telling them to move the hips 1st and then the shoulders and walk them through might work. But if you can throw a ball like a man, you should be able to let your legs, hips, and shoulders happen and hit the ball with your right hand being your only swing thought if you wanna call it that like throwing the ball isn't really a "throw thought".