I don't know if there is a tried and true science behind this but I've had different results with different baits when tipping my jigs. I've found that crappie and perch like the jigs tipped with shiner while bluegills like it tipped with worms. This isn't always the case but it seems like most of the time, bluegill will flat out refuse to bite or just nip a jig with a piece of shiner on it but will hammer one with maggots or crawler. It seems like crappie and perch prefer it the other way around. Any thoughts?