brainbrian wrote
"Bull horns" facing each other to show we're shooting 1-and-1 on both ends
Sticking out a fist to show the next dead ball will be a media timeout
Point to wrist or in the air to show time is about to expire or there is 1 minute left, again depends on who I'm working with
Hold fingers showing about an inch to mean the shot clock is low during a dead ball
Running hand back and forth to indicate the player inbounding the ball may run along the baseline, also point to the spot to indicate a spot thrown in
In NFHS, that last one is a recognized signal. Generally, I'll still use items one and three from this list. (We don't do media time-outs or shot clocks here.)