Some years, when my ponds have had heavy hatch years of bass fry, UL and 1+" jig/grub combos have worked (Sassy Shad, Twister), as have streamer flies with fly tackle. But my fish were never as big -up to 4lbs.
Are you certain the bigger fish are targeting the fry? It can be difficult for larger bass to keep tiny fish from escaping through the gills. In the UW video I've been doing, the fry (1 to 2") are targeted by bass up to about 13". Bigger bass are after the younger bass that are targeting the fry. Maybe go ahead and try live-lining, just to be sure. Or, with prey that small, a stomach pump would work well. I often use them for trout, just upping tube size for bigger trout/prey.
Also, keep in mind a few things: Sight-fishing, or fishing to busting fish, can be esp frustrating bc lures rarely look like actual food, esp with repeated exposure. And, some bass are simply "immune to angling". Such fish may be most vulnerable under reduced visibility. Maybe wait for a dark overcast day.
I'd stick with lures that give few negative cues: swim jigs, soft jerks, and... here's one few people seem to know about: the Lit'l Fishie now sold by Creme. It's a tiny to small swimbait that I found bass and walleye have a really difficult time learning. Great lure.