Storm Gomoku Koika 40g Jig - Green Sardine The Storm Koika Jigs have been designed for slow-pitch jigging, having a middle balance point and broad profile to allow the jig to fall in a flatter motion. The dense compact body design allows the jig to travel through the water easily to the depths you need to fish at. Allow the Storm Koika jig to have some slack line and it will fall in a fluttering - rocking motion that fish cannot resist.