Did you go out to the marinas
off Dike Road in Scappoose? Might checkout St. Helens also. We were located on Sauvie Island. Unfortunately, I do not know the name of it now but you might drive out and ask one of the liveaboards about the possibility. Go straight where the road turns toward the school
and take the first gravel drive on the left (past the farmhouse on the corner). You'll see the cars parked down in the meadow.