"If you want to stop the world, stop a child" Cellini
Kozmo utilizes this rule. I can't think of anybody who wouldn't.

10 times out of 10 I always approach families who seem lower middle to upper class. This is the demogrpahic of America that has money. Now I've been taught that high school students are not the ones to perform for because they don't have any money. From what I have experienced that is pretty accurate.

There was a group of four that walked by me. One guy was drunk out of his mind while the other three,two females and a male could tell by my body language and the fact that I was avoiding eye contact with them that I was not interested in putting on a show for them. Eventually, this dude got close enough to me to realize that I was not putting on a show for them. Was this the right thing to do? Did I throw away an opportunity to do another show that would have turned out just as good as the last one?

You probably could have hooked the group in by targeting the women, but my question would be whether or not you really want to have to deal with a drunk.

Plus, do you really think you could have effectively used that particular group of four to seed a larger crowd?

I think you did the right thing.