Greg, I hope your trip to Seattle is fun and you get a chance to fish the area. Please note that you won't get very many responses providing specifics on locations to fish this area due to the heavy fishing pressure of this huge population area. People tend to keep their favorite places secret. Use the search function on this forum and you'll find plenty of options that would meet your needs. Again, welcome to Seattle and good luck on your fishing and searches.
You should repost this question in the Saltwater section of the forum. FYI it's a numbers game- pretty much any beach w/ decent tidal movement and cobbles will at some point have fish. They cover a great deal of water to find food and so must you to find them Good luck!