Ever use a Shasta fly? One mini marshmallow with a single salmon egg. I use to slay rainbows with them.. But if I was looking for larger ones I'd throw a marshmallow with a nightcrawler floated 16 inches off the bottom.
Funny we use to fish this Lake Castaic down San Diego ways for record largemouth bass. All the huge plugs were painted rainbow patterns,, but if ya fish at night with a small rainbow or even a bluegill you stand a good chance of hitting a 15 pound plus bass.. Just don't get caught using a gamefish as bait... I was never much for trout fishing myself... If they stock trout,, there should be a population of bass eating them...
And I saw someone talk flatheads???? Bluegills slay them. Or large Goldfish... I've pulled many a 30+ pounder outta them oxbow lakes and the Arkansas and Mississippi Rivers.
BTW nice buddage you got growing on.. GL with the new genetics and Keepem Green