1st round;
10,000 people, predict half will profit, predict half will lost
2nd round;
5000 people that won, tell half again will profit, half will lost
3rd round;
2500 people, rinse and repeat
4th round, 1250....
5th round, 600
6th round, 300
7th round, 150
8th round, 75
9th around, 30
10th round, 10
by 10th round, there will be 10 people that can vouch for you that your predict 10 for 10.
take those 10 people as your sales man, rinse and repeat.