Okiedude, I'm glad you asked.

Here's my personal list:

1. Tear down the dikes. I think research has fairly conclusively shown that lost tidal channel habitat in the estuary is the major constraining factor on overall chinook production. But that will obviously cost a hell of a lot of farmland. Are you ready to be the guy that tells Fir Island farmers they're gonna get wet? Me neither. But it seems to me we have enough potatoes and not enough chinook. The same goes for upriver dikes. People will have to accept that floodplain living is a bad idea, and let that river go where it wants to.

2. Build a time machine and go back to convince folks that an unlogged watershed will benefit their great-grandchildren. I believe that lots of subtle changes from all that logging have destroyed a lot of the river's inherent productivity. Without a time machine, there's not much we can do now except stop the ongoing logging and wait 500 years or so.

3. Reverse commercial and residential sprawl, and build compact communities in their place (out of the floodplain).

See where this is going? It will take a dramatic change to make much of a difference. Most likely, we'll just continue on about the same path while wild salmon slowly become a museum piece. But I hope not.