One thing to add is that I constantly scan my environment and predicting what my posture will need to be. On the track, I somewhat know how I'll be in posture but on the road it's a matter of interpreting my environment....
When beginning to ride the track, I would treat it like the road and predict (and practice) what your posture needs to be. Once you learn the turns and get a feel for it you can start to let it come naturally.
When I took my upper level advanced rider course, they asked us why we thought riders drag their knees. I pipped up "As a lean angle reference?". Which was correct. I think it's the only time I guessed correctly on a subject involving M/C racing.

Haha....
I tend to drag my knee a little more than others given my angle since I'm still trying to figure out where the "sweet spot" is. It's coming to me and it just takes time....
Good luck,
SD