Something goes wrong I yell at them -'Fix it'- whether it's their fault or not. You can only really yell at the players you trust.
If the players don't trust the coach it is a problem and vice versa.
The betrayal of trust carries a heavy taboo.
In morals what begins in fear usually ends in wickedness in religion what begins in fear usually ends in fanaticism. Fear either as a principle or a motive is the beginning of all evil.