Sailfish typically hunt in groups to drive large fish schools to the surface for easier capture, working together similar to a wolf pack. Sailfish employ a number of maneuvers or behaviors with their bills in order to stun, scare, and corral prey.
https://www.floridamuseum.ufl.edu/discover-fish/species-profiles/istiophorus-platypterus/
https://www.sharkteamone.org/sailfish-information.html#:~:text=The%20Atlantic%20sailfish%20is%20highly,dive%20to%20over%20100%20meters!