Cover hacking of Z-CRANK Jr. adopts "ultra high buoyancy balsa material". In addition to the overwhelming high buoyancy performance of the bulky form and balsa material, the “snagless protection” system with a high elasticity circle guard realizes an amazing obstacle avoidance (snagless) performance. The high elasticity circle guard completely guards the front hook that makes first contact with the cover such as bush and timbre. It is possible to boldly attack with a fast moving plug instead of a soft bait with structure capture such as shallow sinking cover and shade capture such as dead leaves under the overhang and floating garbage. In rocky areas and lip wraps, the highly elastic circle guard repels the contact structure and demonstrates "bumper performance."