"Countdown" allowed or not?

[rsl]

I have a similar problem in a rec gym I work at. It has a single clock at one end, and some of the players started routinely counting down the WRONG time when the other team had the ball at the end of a period. They did this on purpose to get the opponent to rush the shot by counting ahead, or to get the clock to expire before a shot by counting behind.

Since I ref here every week, I banned all counting down by coaches or players as unsporting. They all complied and I never had to T anyone. I still occasionally have a coach forget and count to help his own team, but unless the count is incorrect, I let it go.

The fans still count (I can't T them), but the fans always count correctly to help their own team. I haven't had any unsporting fans with intentionally wrong counts yet.