what kind of comments/arguing from a coach constitute a technical foul?

[thereluctantref]

I think that what's happening nowadays is that there is little sportsmanship involved from the coach and it filters down to players. They see coaches like Bobby Knight and they think that they are the example of the attentive/alert coach or strategic coach. I used to say a lot more (I coach as well) but after my first experience refereeing an alumni league game from my old high school, I had a different respect for referees. I think a lot of people who criticize refs, have never donned a whistle...