That really sounds like fun. I'd love to see that contest on our campus! Maybe I will suggest that.
PenguinTrax, I believe that ZTA chapter was from Valdosta State, and they stepped at a Georgia State stepshow (that's where I go to school). I didn't go to the show, but people were definitely buzzing about their performance.
I did see a handsign for ZTA once, they kind of linked their hands together and spread out their fingers, so it looked like a crown. Here's the link so you can see it. The chapter is at Augusta State here in Georgia.
ZTA Handsign
Hope this will help you! Good luck!!