Shimano Butterfly Flat-Fall Jigs - Shimano Butterfly Flat-Fall Jigs add a totally unique dimension to the butterfly jigging technique. The jig can be easily worked by free spooling the lure through the desired target depth, crank it up 30 feet and then free spool again. Anglers can also cast the jig and let it fall while free spooling and wait for the bite, which usually happens on the fall. The center-balanced jig falls with a wobbling action in a horizontal position, remaining in the strike zone longer than other butterfly jigs.