Last year I got turned on to "Hali's". A Halis has a small (1in - 11/2in) in-line vertical blade, with a small 1 1/2in chain hanging from it to a hook.
The idea is the blade creates flash to attract fish in, & then the live-bait on the hook gets 'em.
They're a little pricey in my book, but work well. Late last season, when I'd lost 'em all, I made a cheap imitation which seemed to work just as well. I fastened a small walleye on a blade on a clevis 3in above a single hook. As I jig, the blade spins. Works great & cheap. I can afford to lose these.
Used for 'gills & Crappies.
Good luck,
Paul