Is this common in your neck of the woods?

[26 Year Gap]

I have done just a few games with a shot clock. The shot clocks are on the top of both backboards where all players, bench personnel, coaches and officials can readily see them. No difference from the game clock in my opinion. Why penalize the defense by letting the offense know what they should already know? Spot throw-in or run of the line especially coming in from a timeout is not the same in my opinion.