Free: Contests & Raffles.
You're going to have a very tough time getting a king there. Right now, king fishing in the sound is very slow for people with boats, let alone those without. The only fishing I know that gets good at Golden Gardens is for pinks, which won't happen this year. I know people do alright for kings off the Edmonds pier. Beyond that, I'd wait a bit and hit the rivers. You can easily get into a lot of fish once they hit the rivers.
Are you seeing any fish activity? Herring on the surface with birds hovering and diving?