I decided to do my persuasive speech on how luck is not about chance. However. I need to have a visual aid,any ideas?

Gambling (not sure if its appropriate). Get pictures of cheaters I guess. You may want to Google your main topics and search for pictures.

I can't be accurate as to what to give you because I don't know what supports you are using.

A picture of dice in midair about to hit a green felt table with a blurred open hand in the background.

http://images.google.com/images?hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&um=1&sa=1&q=gambling&aq=f&oq=&aqi=g10&start=0