Thanks for the input, Camron. I understand about going to stop time at the end of each running period for the reason you mentioned, but one of my goals here is to make the timing of the game the least confusing for the clock operators as possible. These people are volunteer dads and moms who have virtually no experience doing this.
BTW - I always tell them that if they forget to stop the clock, we won't say anything but if they forget to start it, we'll yell at them.