I would beg to differ on this point. How many people trained in Gracie Jiu Jitsu after watching Royce decimate the competition in the first UFC's? Tens of thousands (myself included). Many people also lived/worked/flew to Brazil (from all over the world) to learn this particular form of jiu jitsu. All you have to do is show people repeatable skill and you will attract them. Show...not tell.
Someday, If I ever get a vacation, your school is on the list of places I want to go get beat up at.