I was under the impression that the reduced size in Chinook was due to harvest of the older fish. Since they are available to the fishery for longer, the chances of getting old and big are reduced.

The whales eat adults as they return. The same problem of fishing on them won't change.

To add to that, now data is showing up in AK that size at age is reducing. The fish are getting smaller because of lack of food.

The idea to stock Chinook to actually benefit whales will work only if all Pacific Coast fisheries are capped at the number of Chinook taken in recent years and these fish become total add-ons. That, and control of the pinnipeds eating smolts.