Or maybe they're impervious to bull$hit drills but you could expose your dd to them and see how far it gets her.
Then there's this from a former big leaguer who laments wasting his time, but what does he know?...he's just a guy who had a hand in Donaldson's success.
Bobby, never gets into his legs in time (this video) so he pushes the hands vs the hands being pulled from a leveraged position.