Phizzer,
Got to say...
your statement of people get techs in the heat of the moment is a cop out!!! Maybe a fine and harsh penalties may help those involved in the heat of the moment remember that moment - who knows, it might even make them grow up and become more level headed like a lot of other sports people are!!!
More level headedness allows for better competition, better presentation of the sport and therefore a better involvement from the general public. Look at how the AFL have streamlined the behaviour through their rules, enhancing the overall presentation of the game and making it better for all to be involved. Gone are the days where you see a fight every week and many bloody faces from biffs and dirty front on clashes. Gone also are the days where you only get 20,000-30,000 people to a game of Football on average - they have had to make most stadiums sit 40,000 plus to deal with it.
Only occassionally do you see and ugly incident in the role model level of the game - however, a lot of people can be heard saying they miss those days of hard nut footy!
Secondly, enforcing of fines... BSA is a business - there are debt collectors that act on behalf of the business to collect unpaid money. Very much like an unpaid electricity, gas, water, dentist, doctor, lawyer bill etc etc
They will get their money if they really want it!!!