Where/how to look for a producer

Hi,

apart from ShootingPeople, any recommendations regarding where/how to look for a Producer, and other production-related roles for a first short film?
I'm a writer/director, and I'm finding the juggling of several different roles during production, to be very laborious and leaving me no time to focus on directing and the quality of the resulting rushes.
It feels like a waste of everyone's time, to just go around and spam people, without prior introduction or any kind of previous link.

Thanks in advance,
Tom