Interesting but, with all due respect to Dr. Timney, it's not altogether correct. Low wrist could be more repeatable for him and maybe for a lot of folks. On the other hand, I know at least one person who knows high wrist is more repeatable for him (me!). I'd bet serious money that medium wrist is more repeatable for others.

What I'm saying is that wrist position is NOT a one-size-fits-all thing. Different people have somewhat different muscle/bone structures, different physical histories (like injuries and such). Don't just believe everything you see some expert put in writing. It might work best for HIM, but you ain't him. Try different styles and see what works best for the way YOU are put together.