The marketing guru behind NFL Super Bowl champions the Green Bay Packers has addressed NRL chief executives in a bid to help clubs maximise their potential in a saturated sporting market.

Craig Benzel, the director of marketing at the Packers, gave a presentation at Tuesday's CEO conference in Sydney to explain how the small-market franchise has risen to become one of the most recognised brands in American sport.

In a sporting landscape littered with billionaires and internationally recognised franchises, the Packers are the last community-owned, non-profit team left in American professional sport.

They survive in a city of roughly 100,000 people, but have sold out every home match since 1960 and have a waiting list for season tickets of more than 85,000.

It's a sobering statistic for NRL bosses on a day when South Sydney became the first Sydney club to crack 19,000 members.

"He talked about sales and marketing and his role, and what they've done as a community-based club," Canterbury boss Todd Greenberg, whose club has set a target of 13,000 members by round one, explained to AAP.

"I would've thought (all NRL clubs) can take something from (their success), I think good learning comes from all those sort of things.

"I think as sporting administrators we are always learning and we're always looking for new ideas."

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