Not effective: Simply drawing attention to yourself. Yelling at him at a political rally.  Flipping him off.

Effective: throwing a shoe at him and the press asking questions.

Conclusions: The more unusual things one does that stray from U.S. norms and culture that cause the press to ask questions, the more effective you will be.  Who said this guy was dumb?

YouTube – Bush: “So What If The Guy Threw a Shoe At Me?”