They're "shifting" as they swing. They're not swinging from a still/static position, and they didn't shift onto/into their lead leg then start their swing. They should still be "shifting" into the ball as they make contact with it....optimally shifting into it right at 50/50 at contact, but that's not always possible. What I don't want is for them to shift into a position, and then swing the bat from there. As someone's pointed out previously, if they get to a specific, specified position and then swing from there...they might as well just start in the position, as they've lost all of their momentum and/or body weight into, and through the ball anyway; if getting somewhere, and then starting their swing. JMO naturally.Hello. If I’m reading this correctly. Are you saying that a hitter ‘shifts THEN swings’? They don’t ‘shift AND swing’? Correct me if I’m wrong please.