Do you use those egg flies? I've never fished for them but found it fascinating. Some say it's just pure random luck hooking one, others say you need to mimic an egg ... I don't know. I've caught land locked Sockeye's (kokanee), but they are only related by DNA and act nothing like(or even look like) what you are dealing with.
For sockeyes, since they stop feeding once they enter the river, most people just use brightly colored yarn. Some use just a bare hook. It is pretty much random luck, though there is some strategy (figuring out how far out, and in which channels they're running) and some technique (presenting the hook at the right depth, setting the hook, landing them, etc.)--neither of which I have mastered, or even come close. Though I've caught several now. And grilled one up--best salmon I've ever had.
Fishing for silvers is different--then you use an egg fly, because they still feed. Hopefully will be going after them next week on a pretty remote river near our job site.
Popeye has just influenced me to put salmon fishing in Alaska on my bucket list.
You really should. I've never been much of a fishing fan, but I'm drawn to the river every night up here now, even if it keeps me up past midnight.