A friend has just passed me a book which reads like a conversation between Ed Morrison and Derek Robinson.
[Penalty has been awarded for foul play.]
Derek: Now here's the dilemma. You're very quick and positive, which the players like because it lets them tap and run. But the offence may be serious. You may want to speak to the guilty party.
Ed: In that case I'll say: "
Don't take it". I've got to weigh up the situation fast, decide that I can't let this offence pass, and stop the game.
[..]
Derek: It occurs to me that by the time the referee's said "Don't take it" they might well have taken it.
Ed: If that happens, don't stop it. Don't bring them back. Just live with it and catch up with the offender at some other time. But it's best to seize the moment if you can. Something in you just clicks and you know:
this is the time. Everything's moving so rapidly that you have to create a chance to communicate
now, because that communication is essential to your control.
(published 1996, updated 2007)