I just saw this challenge and find this to be a great way to stay motivated.
I see that in all the games that people are either at, ot close to, the 4% weight loss. I am wondering if there is a way to pay the TOP weight loss person to win 10% of the pot and the remainder goes to the rest of the people. Sort of throws in a little more motivation to loss more weight when you have a chance of winning more than your initial entry.
Just a thought.