I have a policy of never refusing to play for fun, does not matter the team, does not matter the race.

I just don't enjoy fouling games. So, be aware, I will refuse to play if you have dirty players in your team, or if we play and you foul without need, I will refuse to play any future game with you.

I just found this the other day. I can't agree more:

http://fumbbl.com/help:ShepherdOnFouling