Have you you thought about sinking jerkbaits? Generally, in rivers, it's easier to let the current and gravity get your bait in front of fish. That way, it's getting down to the strike zone instead of being pulled past before they even get deep enough.
Rapala alone has 5 different Countdown minnows now (Countdown, CD Magnum, CD Elite, Scatter Rap CD, & X-Rap CD), plus other sinking jerkbaits like the Shadow Rap & Subwalk. The shorter, deeper diving versions of the Shadow Rap Shad and the Ripstop (it Suspends, the SRS floats), are both 3½" long (#9). As for the Countdowns- obv the Magnum doesn't have anything that size. The rest all have something available around 3". The Elite is available at exactly 3" because, for some reason, it uses a different size than most of these. It comes in 2¼" & 3". Like the CD Elite, the X-Rap CD has wide, flat sides that put out plenty of vibration and flash. The X-Rap CD comes in 2 sizes, (#5 & #7) while the Scatter Rap is only available in #7, but regular Countdown minnows are available from sizes 1-11.
That said, I've always done well on Duel/YZ products, and I know they make a lot of little minnowbaits for trout and panfish, including sinking versions like the Pins Minnow, Crystal Minnow, or Snap Bean.
I've had mixed results with Lucky Craft, They can knock it out of the park, or completely whiff.