Originally posted by Darth Boru
I'm all for letting it ride for a while.
Maybe you could set a time limit, however many weeks you think best. Then if no-one wins, pick 2 sets of numbers a week for a while? The odds won't change for winning per draw, but with more draws per week, maybe we'd get a winner? If someone wins on the first draw one week, don't do a second one.
Just a thought.