I thought I'd propose a working system I've used for tracking bets on a message board. I'll update the standings in this thread with the member, their record, and their play for that night. All bets will have 1 unit ($100) placed on them. Only one bet per day and if you lose $500, you're off the board.
Any bet works (ML, RL, O/U), just make sure you only post one. You do not have to post a play every day. If there are duplicate bets on the board, the worst odds will be used to encourage people to look for better odds and to make the math easier.