I agree that tiny buggy jigs might more consistently entice trout to bite, but don't be afraid to try heavier jigs when they might be advantageous for longer casting range, deeper sink, or current management. Then again at times large flashy lures like 1/4 oz. Castmasters and in-line spinners may outproduce jigs. Right now my open water strategy is to start with 1/14 oz. #2 hook or 1/20 #6 jigs for maximum search coverage, and downsize to 1/32 #8 if the bigger jigs aren't getting bit. Haven't done much small stream trouting, but would probably go straight to the smallest size that could reach likely holding areas.
Of course, a fly & bubble might be a more efficient spin casting tekneek if the trout are being hatch specific finicky.