Skimmed most of the thread here. OP, no use in arguing with free advice.
My main point is going to be that during a drive - any throw where I'm using an x-step - during the actual x-step, reachback, pivot and release, just those few seconds, I sure still have eyes; they work well; they are open. If I try to think back to what I saw during my throw, there's little to no access to that information. My brain is simply not concerned with optics during the 3-4 seconds it takes to mechanize my body through the motions.
I'd bet it's the same for Paul McBeth. His eyes may be open, but he's not processing that visual info at a high level, he's focused on power modulation and release point and angle -whatever- focused in an abstract, deeply internal way because his muscle memory and motor cortex are on the job. They've done it before, the know what's up. Its up to them to make the line he picked while standing on the pad before the throw and
cognitively and
visually aiming happen.
Next time you go out, and you have just a really
great drive - you're focused, you're not thinking about those contrarian turds [<3] on DGCR, you made the right disc selection, you got enough power and BAMMO you've nailed your line - think back about what you SAW during your throw and your "hit". See how clear that memory is and compare it to the clarity you get when you are done following through and your limbs are dangling dumbly and forgotten and you're look up WATCHING your disc fly.