Blackjack, there's a person on the forums who goes by Washougal_Otaku. His name is Aaron, and he's won a couple contests in our room. So, PM him.
I have no idea where Washougal is or if he still lives there, but he's likely your best bet.
And realistically it's time to start looking into public transporation for your friend, or finding out what towns someone might be coming in from that Washougal would be on their way, then finding out who's coming from those towns.
This particular thread really has been mostly chatting about who's coming and who's wearing what so not likely to produce your solution for you.
Try posting to our yahoo groups as well.