I definitely think it's worth a try. I'm nowhere near good enough, but if you can get a small group together you should go for it. You've only got to see the response of the crowd and the judges on the video to see how well it went down. They got a standing ovation! Their routine looked quite simplistic, but bringing in the girl at the end gave it the wow factor. Get some good background music and an exciting novelty, on a par with bringing on the girl, and so long as you're at least as good as those guys then I'd be surprised if you didn't get through to the next round at least. It'll never be a winning act of course, but it'd be great exposure!