Sid: After launching at Cathlamet, run downstream to get out of the slough and out around the first channel marker. From there run almost straight across the main channel. Shoreline on opposite side of main river channel is actually north shoreline of Tenasillahe Island. Fish the north side of the island during the out tide. Near shore in 5-30' deep water. Anchor up or tie off to a piling. Use your sardine wrapped Kwickies for this with a 1-3 oz lead dropper, depending on depth & current.
When the tide turns to slack and/or starts coming in, go upstream around the end of the island and drop down into Clifton Channel (south side of Tenasillahe Island. This is all a trolling game, mostly with plug cut or whole herring. Lets us know how you did when you go. I will be there the first week in April for a couple of days.