The nisqually river has a few good spots for flies :)
Right above the mouth of Ohop creek there is some good fishing, but its a little hike in. Maybe 1-1.5 miles or so.
Good call on the chartreuse, I use a nightcrawler with a little ball of the chartreuse over the end of the hook to keep the worm straight. Troll it slow with one or two split shots for weight