Has anyone considered that the problem of smaller salmon is because of "catch and release". By that I mean more fish are being returned and thus more hook injury is noted. Also its easier to become laker bait when you're a smaller, weaker fish than a robust healthy fish.
Before all the new technology we were lucky to catch two salmon a day, and they were taken home for dinner.
This past summer I stated to my fishing partners that the smelt "clouds" were a lot smaller and fewer of them. Maybe the smelt/salmon ratios are off because F&G are calculating stocking rates on old info. (When more salmon were kept (harvested) there were fewer fish to diminish the smelt population).
Just some thoughts.