Thanks, hrudey.
9 additional overtimes? Yikes, I guess stamina must come into play by then!
unlike HT's "coin flip" after what was it, 22 rounds of penalties (or did they shift that to lower team ID at some point?).
Official answer is "coin flip". I've got no idea what the reality is! 
I like the sound of additional 5 minute overtimes, sounds like a fair way to split evenly matched teams. I guess it wouldn't work very well in a low scoring game like soccer (and definitely wouldn't in a match simulation as abstract/simplistic as HT!).
One thing that helps cause a differentiation is that the fouls from the fourth quarter and previous OTs carry over, so teams are more likely to already be in the bonus,...
Ok, another tangential noob question: what do the foul / bonus indicators in the match viewer mean?
If we were playing, and my team commits four personal fouls in a quarter (or 4th quarter plus all overtimes), your bonus light would come on. From that point forward, if my team commits a foul (other than an offensive foul), the player fouled will get two free throws. While a team is not in the bonus situation, only shooting fouls cause FTs (normally two FTs for a regular shot, three for a three point foul, and one if the basket was made and a foul occurred).