The rising gas costs have prompted a challenge where I work as to who can bike commute the most to work.
You would draw names to make up the initial brackets. It would cost a base amount, maybe 10 bucks each and the money would continue to pass up each time. You wouldn't make any money unless you won the final round, unless people were allowed to cash out before starting the next round. So they could cash out, or go on for more money. Then you could keep a rolling bracket so as people got knock out they could rejoin against others who were eliminated or new people. Then you could pit winners of won bracket against another. Say you won in four rounds, you would win $80. Say the winner of another bracket that started after yours won in three rounds, he would have $40. You could go head to head for $40 each. We would want something that would promote biking not eliminate people right off and send them back to driving. You could do side bets to with the person you are biking against too. Like five bucks a week on top of the entry fee.
Anyone ever had any luck with something like this? Ideas?