less than 3/10ths of a second left

[Loudwhistle]

While I know the coaches are supposed to know that .3 or less on the clock there can not be a catch and shoot situation, but rather that the player must tap the ball. Should we have to tell the coach "hey, the rules say that .3 or less it must be a tap for a try at a shot" or should we not tell them, assuming they should know it just like any other rules that they might actually NOT know?

When I first started reffing, I thought the coaches knew all the rules. Experience has shown me that most coaches know very few rules. Coaches study basketball plays not the rules like we do. I NEVER ASSUME a coach knows the rules. The same applies to past players that think they can jump on the court and reff even a 5-6 level game.