Don't like round bobbers except in the past when I used live bait in the middle of summer (neither of which I've used in decades).

I like to see the initial dunk of the float's quill followed by it disappearing beneath the surface. But key in getting that strike is the use of finesse action lures that are smaller in size. Fish seem to key in on them until their patience runs out, and then BANG! FISH ON! Hair jigs, spike tails, Crappie Magnet double tails, mini-sticks rigged from the front or wacky rig amoung others generate more strike potential. As important as lure size and design is that it be presented horizontally/ perpendicular to the line. JMHO