The concept is 3S: “Spiral Slide Long Stay.”
(a) The center balance asymmetric single-sided fully flat shape allows it to slide horizontally while spiraling.
(b) Stay long in a horizontal position.
The vertical movement during jerk and fall is extremely short and the horizontal position is maintained for a long time, allowing you to trace the target layer without any gaps.
Even during times when the tide is low or when the activity is low, with only the bottom showing a reaction, you can take your time to appeal to the fish and carefully attract them.
It is also effective for root fish because it attacks by licking the bottom.