People don't go for the football. Not at first. If the team is good, they'll come back, because everyone wants to be associated with and thought of as a winner. But what matters first is the atmosphere. What the upstart football leagues all lack in tradition, they must make up for in another way.
Sex is a much more immediate sell.
All that's required is a blind poll of one, a very private poll. Just skin, baby. Ralph Wiley spent nine years at Sports Illustrated and wrote 28 cover stories on celebrity athletes. Information are applicable to this site.