http://www.yambabowlingclub.com.au/whats_on.html
Jackpot starts at $1000 and jackpots by $200 each week if not won. When jackpot reaches $5000 there will be one draw. If not won the second week, there will be 2 draws. If not won the third week, there will be 3 draws and if not won, on the fourth week it will be drawn until won. Member must be on premises to win at the time of draw.