I think the 24 hrs. already allows for getting caught overnight once. However, I can see giving a 3 hr credit for each subsequent night the same swapper gets caught overnight.What if someone gets stuck overnight and it causes them to hit the 24 hour limit we give them a 3 hour credit? That would be easier to keep track of. Or give a 3 hour credit every day to the person who is up the longest the night before?