There are fish in every mile of the river now. No need to fish at the pens like you used to. Never having been there,fishing at the pens will be your best bet though. If you're plunking bait,I like 5 white mini-mallows and a whole nightcrawler. A big gob of Power Bait also works,but IMO,the mallows and NC work better.
If you're in a boat and trolling,my favorite is to flatline a Hot Lips plug. They dive down 10-12' and seem to really work well for the bigger fish. You can also troll Wedding Rings with a chunk of worm. I've also caught fish trolling big bushy flies like Wooley Buggers or Muddler Minnows.
My favorite way to catch them though is to fish a jig. Anchor up 35-40' offshore and cast 1/4 oz steelhead jigs right up next to shore and jig them back to the boat. Keep them on the bottom and work them slow. Some days I might take 5 minutes to work them back to the boat. Browns,Blacks,and Purple are good.
If you're fishing bait,remember that you're done after the first two fish you catch,whether you keep them or not. If you're using hardware and are running single barbless hooks you can catch and release all day.
Be aware that the area is heavily enforced by the indian wardens,and they aren't afraid to write tickets. I've fished RW probably 50 times and have seen the wardens almost every time.