When I fished lake washington in the north end we would stay all the way north at the end of the lake. We would just run a big circle apx 100 yards off shore. Small dicknite's or simlar spoons were the ticket. We would run leaded line at between 30 and 40 feet. Have not been there in a while but almost always paid off. Good luck.
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You don't catch fish, fishing catches you.