Having been both a musician and a sound man over the last several decades, I am aware what musicians tend to think about sound men but what tends not to come through is what sound men think about some musicians.

Musicians need to remember that the sound they are hearing on stage an be totally different from that front of house and they are in the worst position to criticise the sound man for it.

As for drummers (we all know about drummers!) the main problem I've come across is being unable to turn them down acoustically. If they insist on hitting the things too hard in order to get "the right sound" you can usually turn up the back-line to compensate but then you start to loose the vocals. Put this in a stage show with an un-miced chorus and you have a problem.