Thanks JR! For the most part I'm already on only the balls of my feet for, I believe, all of those drives. Are you talking about the plant? I think that's the only time my whole foot makes contact with the ground. Otherwise I'm just bouncing on the balls of my feet (it's a bit hard to see with the resolution on these vids).
I'll start working on the right pec drill (left for me) again. I had started but it was difficult to implement into my rounds, as I've only recently been really comfortable throwing again (married and a few kids meant reduced play time, and while I could still throw the disc well enough, I lost the driving feel from when I used to really play a lot, which I finally just got back). I know the right pec drill will help with closer pulls to the chest, what about with the later turning of my torso to less? Logically it seems like it, as you can't really turn your body a full 90 degrees from the target at a standstill (or at least it's difficult).
I've tried picking targets and keeping my eye on them, or re-obtaining them asap after my head turns back to where I'm driving. It's helped my accuracy driving, and my upshots, but I can't quite get the hang of it when I'm driving for power. I'll keep working on it.