Doesn't matter if you're using a minnow or jig under a bobber, learn to read what it's doing. Sure a minnow will jiggle the bobber, but when a crappie hits, the bobber will jump or make a sudden movement diffrent than a minnow twitch. Set the hook. Watch Russ Bailey's videos of him fishing docks and boat lifts. He uses jigs but if that bobber even twitches, he sets the hook. Works for me.