> Would exaggerating knee push/pull help bat speed? I would say, quite possible, but how do propose pulling it off? Would you actually make a conscious effort to direct your knee to do this while you are at bat? Or would you practice the movement in a batting cage, hoping that it would become an involuntary act while swinging?
I would do whatever is more conducive to bat speed, which I'm guessing is making the exaggerated push/pull natural.
Even on balls, I see Pena slightly pushing that back leg (and not swinging afterward, obviously). It seems to me like a typical cue, though I may be wrong.