Just talked to guide Curtis Welch of Special Moments Guide Service yesterday. He said fishing should turn on in both Sammamish and Washington in early April.

He recommends using jigs or deep diving crankbaits 20 to 30 feet deep. Hope that helps.

For what it's worth - I was finding them in 4 to 10 feet of water in the Eastern Washington Lake I fished a couple of days ago. I caught a half dozen bass slowly retrieving jigs.