I'm with vetteman on that. It ain't the size of the hook so much as how sharp it is. Like "sticky" sharp. If I'm using whole Blue label herring, i step it up from a 4/0 to a 5/0. But I am continually sharpening them, especially after I pick up a ling cod or a rock fish.
I drop down in hook size if I go to a Red Label, but the attention to the point with a file doesn't change.
"Black as a lawyer's heart"---I like that, Dogbreath. But there are parts of the world where all the fish they catch look like that. We're spoiled out here with major chromage so we can be a bit pickier. Seeing a beat up dead chum like that is a bit puzzling, though. Did he actually eat it?