When I used to guide in AK on the Alagnak we had odd year humbies, which above the Aleutians is the same as our even year runs. There were so damn many of them and we'd avoid them as a pest not a target species. The really weird thing about these fish was that they were only about 14" to 18" long on average, some even much smaller. A "sail fish" that's slightly larger than an average lake trout is really quite funny looking. I wouldn't be surprised at all if some of the even year fish on the Skagit and other NW rivers were nearly as small we just don't usually see them.