Striking the ball with a fist:
Stop Clock with raised open hand...
Hand balled in a fist, upper arm and forearm at a 90 degree angle...opposite hand's forefinger point at balled up fist...
Point for spot throw-in.
Ball enters basket from below:
Stop Clock with raised open hand...
Point at bottom of basket...
Point for spot throw-in.
All nationally approved mechanics...really, it's true!