Any area that does not respond to hard lures (ports, urban rivers, estuaries, tidal flats, fishing ports, surf, small shores) is fine. Since it is a lure that can be eaten by natural movements and undertows only with a soft soft bait material, it is more suitable for clear places than muddy, but if the water depth is shallow, muddy will not be a problem. It is best to use it on the surface like a shallow runner minnow.
The soft feeling unique to the worm is close to the vibration of the real bait, so even sea bass with a strong sense of caution will bite. Moreover, the soft material has excellent suction. Furthermore, it is also effective when you are picky about small baits such as "Kurukuru bee, net, whitebait, small sardine, and whitebait" that cannot be handled with hard lures.
Furthermore, it is also good at night games when noctiluca, which hard lures are not good at, occurs.
The most effective days are clear, windless Betanagi days when visibility is good regardless of turbidity.
Above all, because the material is soft, it is also possible to cast the lure into narrow areas such as bridge piers and structures that are easy to hit. You can actively cast without fear of damaging the lure.