Originally Posted by JohnYandell
Ball position front to back is a big part of this. If the ball isn't far enough in front it won't be natural to explode upward and especially forward.
The contact is at the very front edge of the body--like the nose--but to do this with the leg explosion requires a ball toss placement into the court.
tho I agree tossing into the court thing but I have seen some juniors and rec players over doing this and the balance become unstable.