Get thee to http://www.nasgaweb.com and sign up. Let people know you are interested and ask around.

I know there's a throwing community in Victoria, but I think it's a bit small. I know that as of last year, they were having a problem filling a Masters Class at the Games, which is why I didn't go. However, there are several B-level athletes around, and you will learn a lot by working out with them.

Good luck, and maybe see you at Enumclaw!