if this is old news, just ignore. i am sure people who have been doing this a lot longer have already picked up on it.
what i notice:
say kansas is playing some horrible team (so bad you never seen one of their games till now)... 1st half kansas scores 50 and the bad team scores 15. Well, 2nd half comes around and most most of the time the bad team out scores the good team or they are even in scoring.
so if you notice a game like this you will note that the bad teams total team over is really, really low. Take the over on that bad team and it will hit say 7 out of 10 times.
and this team can be really, really bad. it seems it does not matter.