No one knows spinner sharks better than Capt. Greg Bogdan, who operates the 28-foot Conch Permitted out of Sailfish Marina in Palm Beach Shores, where his customers (kids included) consider spinners a big-ticket draw. When the spinners are in, Bogdan has no trouble finding them, by running the beach in 10 to 30 feet of water cautiously, as ground swells can form here with little warning. He locates clear water, usually south of Jupiter Inlet, and looks for either loose aggregations, with the sharks swimming a few yards apart, or free-jumping singles. They're hard to miss. What's behind the free-jumping is open to debate, but we know for sure that hooked spinners jump, a dozen or more times in a row. Think a mako is tough? Try hooking a spinner, which keeps spiraling in the direction it was originally headed, while your line rips the surface like cardboard tearing.