As far a track ergonomics, this is what I learned from one TracQuest instructor, who felt strongly enough about it that he me stop and re-adjust everything.
Seat: scoot it up and raise the back such that with your arms stretched out, the steering wheel is just past your wrists. For short people like me (6'2") this puts you in kind of a cramped kiddie-kart stance, but it does help you with better leverage on the wheel, and for me resulted in much less shoulder fatigue.
Hands: 9 & 3 or 10 & 2, whichever is better for the wheel you're using. Thumbs on the face of the wheel, not hooked thru (I actually learned that in fire truck driving school). Only take your hands off the wheel for an OTE or other incident, or to shift. Shuffle steering was not recommended for track driving, but might be appropriate for auto-x.
Jack - you and I are the only ones looking at your hands; kinda like when women tell ya "Excuse me, my eyes are up here!"
