One of the problems with mixing hatchery fish with naturally spawning stocks is that the wild fish can't sustain the rate of harvest that the hatchery fish can. This means that either the wild fish are over harvested or the hatchery gets very large numbers of fish over what is needed for producing the next run. When hatcheries get large a surplus the pressure is on to either harvest more or reduce production. What has happened in the past is the wild fish get over harvested and sooner or later the hatchery gets some disease or other problem that wipes out a years production, which takes years to recover from. I hope we aren't going to repeat past mistakes with the Cedar River and Lake Washington sockeye.