I agree with kickittome regarding the games being timed. I am back and forth on the mercy rule as well but as a coach who has been on both sides of a blow out, you have to remain "composed." I would never embarrass a team in a match if it was that one sided and I would hope the other coach would do the same. It is common courtesy to save face. Therefore I don't think we need a mercy rule but some coaches need to have more respect for their opponents than to embarrass them.