I think there are times that they absolutely make a difference. When vertical fishing over brush and the crappie are just sitting there looking at the bait I have found eyes make the difference. when long line trolling with a faster presentation it makes no difference at all with the faster presentation. I also like making my baits to be custom otherwise its no different then pulling them off the shelf at wal mart. With the baits the way I make them all I gotta do is put on a jig head. I dont coat mine most of the time but I will when trolling in muddy water to help with contrast.