The single wisest question to ask your prospective affiliate when you're going to recruit him or her is this:
"Are you willing to learn what I have to teach you and do as I ask you to do so that you can earn an income as my affiliate?"
If the affiliate's answer is "yes," and he or she means it, congratulations! You have someone who will learn what you know, and as you become his/her team leader, he or she will become a team leader as well. That's duplication.