Deciding How Many Units to Play?

[Duff85]

This specifically relates to football handicapping, but i'd be interested in answers relating to other sports as well.

As a handicapper what factors do you consider when approaching bet sizing? What are the variables and do you have any set rules that dictate how much you will bet in any given situation?

[slacker00]

Always bet the max, that you can afford to lose. That number for most people is a comfort zone in evaluating risk of ruin.

Personally, I always bet ~1% of my bankroll for anything that is worth betting. Some people go higher, but they don't always last.