I wouldn't worry about that deadline. Take the time to find someone with whom you can work well, and take more than 32.5 hours to think about it.

(from the YC FAQ: "Teams thrown together for the purpose of starting a startup usually fall apart under stress. You need some kind of personal connection.")

You'll get more and more interested responses if you say something about your idea. No one's going to steal it: even if they did, the magic is in the details.