I'm coming from the jig making forum! Where I found crappie.com I make my own heads! Put hooks in them that match the conditions! Long trolling deep, then mid depth and shallow! For dock shooting I do something different ! Love #2 hooks but they are heavy enough to effect the depth. I know within 4-6" how deep my jigs run! I weight them on my dads ole grain scales we use to use re-loading centre fire bullets . I do prefer round ball heads, just how I was self taught to use GPS for speed control. A sandy flat to experiment with when jigs when they bounced on the bottom at a controlled speedI knew how deep and made mental notes! And #2 hook is heavy enough to effect depth. Found hook ups were better and a wide gap help with loosing fish! My.02 LB