Not being a smartass here . . . but is pushing as HARD AS YOU CAN really what you want to do?
I think if a Hitter follows Kelley's advice and employs the advantage that a Hitter may end his backstroke when the right elbow becomes bent, then a Hitter can grip it tight and hit as hard as he can with his right arm while keeping his body steady. Shorten the stroke, still the body, and deliver Tommy Armour's (bent back) right handed smash!