Lower Bogachiel still has the majority of the fish right now...If you don't mind people, drive down to the "Snag Hole", usually full of both people and fish. If you're trying to avoid crowds then do like Rich suggested and hit the upper stretches of river. Avoid the Hoh right now, not very good reports coming from there. There are some big fish being caught in the Sol Duc right now but you have to work for them.