The Humdinger is a metal spoon style lure suitable for both casting and trolling applications when targeting species such as trout, kokanee and salmon. The Humdinger, from Shasta Tackle Company, is engineered with a specialty ring chamber that emits a constant, low-frequency vibration throughout its' retrieve appealing to fish's lateral line sense system. The Humdinger possesses a fluttering style action that mimics bait fish as they flee from predators - as you retrieve or troll the lure the Humdinger will deviate from its' standard cadence, just temporarily, when speed or water flow changes. These subtle, yet discernible changes in swimming action bring the lure to life and elicit a instinctual feeding response from nearby game fish. The Humdinger will prove an excellent trolling lure fished on its own or when employed behind a dodger with a 20-48" leader. Casting the Humdinger can be equally effective and is best utilized with a 16" leader tied to a barrel swivel to reduce line twist and allow uninhibited swimming action. The 1/2oz Shasta Tackle Company Humdinger comes stock with a siwash hook and is available in several excellent colors.