I've been racing for around 5 years on Sydney 38's in the Great Lakes (US). I live and do most of my racing on Lake Michigan in Chicago, IL.
I wrote a little website that let my crew manage the racing schedule and signups 2 years ago. It was a success with my crew so I decided to let any crew sign up for it to communicate and manage their season. It's totally free. You can pre-register at Sailing Crew Management Website for Racing - Regatta Software - CrewConnect™ Online Sailing Crew Management