FiveFrameSwing
Banned
The difference based on your words is that SnF is about learning how to create a spring using the rear leg and back muscles...there is no emphasis on the "Hips" in the SnF. The swing gets launched with a very tight barrel turn rearward (away from the opposite middle infielder) using the wrists and forearms and NOT the shoulders thereby using the rear leg as the axis for the swing. This will (or should) release the spring.
The check swing drill (based on picture #3 you referenced) uses center of the pelvis as the axis of rotation which is longer and slower and certainly too circular in swing direction
This SnF drill also provides the swing direction. If done correctly the barrel path will be in the hitting zone quickly and stay there a long time so you hit behind and through the ball rather than around the ball....
I will use this drill in conjunction with rear leg swing and deep tee (around the rear hip socket) to further promote the idea of a deeply launched swing that stays on course a long time.
Good description.
Me personally ... I don't speak of the barrel being in the zone a long time, as kids tend to do multiple negative things when they attempt to accomplish such a goal ... but the "out from", with "direction", gets the job done ... and I find that accomplishes the goal without having to mention keeping the barrel in the zone.