MY opinion is that jigs that has caught fish do better than those that have not. My belief is that it is due to the smell that is now on the jig from that fish. I will throw the same head, jig, line etc side by side and 9/10 the one that has caught a fish will catch another. This leads to my question, do you believe crappie are more sight or smell driven when trolling? (longline) which I think both play a factor but I think they are mostly sight, but the smell makes them commit. All input appreciated.