There are a few that speak of TTB for planing. I’m ok with that. Heck, I have used it for understanding how to slot and get on plane. It’s when guys say it’s to achieve speed and force that TTB is necessary as the action that creates that. I don’t agree. This to me is TTB, a planing agent.
the blur starts when his hands come forward. Go figure.
Bold above... Are you suggesting that the hands are moving away from the body at this point? Or moving forward in space due partially to the turning of the torso?
Keep in mind that some TTB followers will suggest instantaneous bat speed. That's not what I propose. All I propose is that the acceleration curve begins while the barrel is traveling rearward. Then acceleration continues.