I reckon that the wire trace can help the action sometimes, because there will be more purchase put on the lure when the angler is twitching/flicking the rod. Whilst no expert, I have fished with a Sammy a lot in recent weeks for Pike, in calm water and the action on the lure has been first class. However, I also fished with a 7" Sluggo today, and the weight of the trace etc made the Slug nose dive and made it look naff, so to try to counteract that I wrapped lead wire round the bend of the hook. But I am still probably the only angler in the world not to have caught on a sluggo