I like to throw off the mound,
mostly cups and bowls, and have only rarely thrown anything
as much as a foot high that stayed on center ... that is,
I'm a hobbyist, not an artist or production potter.

Ahhhh....try slowing the wheel down a bit the higher you pull. You will
find it MUCH easier to get the height you want:)

Wayne in Key West
who spent many hours ducking flying clay