I think that if you get to the ball well, you are practically holding onto the handle while the barrel is whipping to, then through contact. The through part is determined by the to part. You can only hit the ball once, so maybe I need to start my own group who is worried most about getting to contact as efficiently as possible. If you slow down before contact, you cut short, but I am not suggesting this.
Can you explain what driving through the ball means to you? I don't know the softball numbers, but the window of time the bat is on the ball in baseball is tiny. At 600 frames per second with my camera, it is 1 frame of contact. I can't imagine that bat speed, swing direction and the swing plane is more important anywhere else other than this one, single point of contact.
I've read that a 90 mph pitch (baseball) on a wood bat is 1/2000th of a second. Anybody have research on the softball side of this?
Why not just do stop swings. Go as hard as you can and stop as soon as you make contact.
Straightleg