Not knowing anywhere better to start, I would call Brion toss and ask for a reference. Maybe he meanders over your way from accross the Sound on a regular basis, even.
I used Sound Rigging and was very happy with the result.
I ended up getting the owner (I think it was 'Todd' - I'll update this later on when I get home) of the company visiting my boat and going over my rigging - advising me on things I should do for improvements and safety. I've since built an identical climbing harness to his - and have overhauled my rig (lots of fun, actually).
A link to their website is above - their info follows:
Sound Rigging & Yacht Services
2470 Westlake Ave N Ste A
Seattle, WA 98109
USA