I used to catch kings on spinning gear in Washington state. Spinners will work, Blue Fox spinners are good ones. Get out early in the AM, or evenings. You don't necessarily have to use a big spinner either, size 5 is as big as I would go, but 2's and 3's will work. When the sun is up and the water is clear, smaller, tarnished spinners can work, big flashy ones will spook them. I used to set some brass spinners in wet coffee grounds overnight, does a good job of tarnishing them. Cast across stream and slow roll the spinner, swinging it in the current, keeping it just off the bottom.