Years ago when I work as a deckhand commerical fishing, we used to paint our hooks red with finger nail polish for sockeye. Red hooks were hard to find, little alone an extra expense. I always wanted to know how Sockeye could even distinguish red at depths greater than 30'. The answer is: the shape of hook actually represents krill. Krill can grow quite large further North.
So in theory you are correct... But remember as a fish grows, it's habits change too. When a King or Silver first hits the salt, it's diet consists primarly of Euphausids, Amphipods, and Copepods for the first year or so. Kings will switch to fish (bait) first followed by Silvers and Chum. Where as Sockeye and Pinks will primarily continue to feed on the above (one of the reasons why the flesh is so red). It is interesting to note that Silvers will feed on zooplanton almost exclusively until the last few months of their lives... The switch will generally occur in late Spring as the blooms of zooplanton dimenish. During these last few months, Silvers can gain as much as 1-3 per month!
Also, most of the fish heading south are "in transit" and are not feeding. They strike out of instinct or aggression. I'd leave the bare hooks home. Stick to baits and lures that make a lot of noise (Pink or orange Wiggle Warts or Hot Shots).
Silvers may hit those bare hooks... I dunno- never tried it. Might try pink or orange Gammie.
In the Winter, we Area 13 boys fly fish for 14"-20" Silvers on light fly rods using a size 14-16 amphipod pattern. Occasionally we nail a 2#-4# Blackmouth.
Downriggin'
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"If you are not scratchin bottom, you ain't fishing deep enough!" -DR
Puget Sound Anglers, Gig Harbor Chapter