Those even year fish that you are talking about are not Humpies. They are fish that are cross-bred between a Chum and a Humpy; called a "Chumpy". he,he

On a more serious note, the Snohomish system gets a small run of even year humpies. The even year fish tend to run a lot smaller than the odd year fish. I found a few at Douglas Bar in '98 that I hooked while I was waiting for the drift boat turnaround.