The 4" Yamamoto Senko is a soft plastic stick bait exhibiting an ambiguous appearance that looks more like a sharpie than any sort of forage. It's actually this oddity that makes the Senko so great - while looking like nothing, it displays an action and profile that just seems to mimic general forage species such as bluegill, shad and crayfish among others. Legendary bait designer and professional angler Gary Yamamoto designed the Senko essentially by accident. He sought to improve the design of the popular Slug-Go, but poured the plastic thicker causing it to suspend less, rather, it displayed an entirely unique action. The soft plastic he created could wiggle like no other plastic and would glide side to side erratically upon the fall. Yamamoto found no wrong way to rig the bait and realized his mistake was actually quite an effective finesse presentation. Bass can hardly resist the Senko's unique horizontal fall when fished weightless or wacky style. Not only does the Senko have incredible fish-catching action, but it casts like a bullet and gets into the strike zone quickly.