Jay McInerney, novelist, wine connoisseur — and fisherman? The author of “Bright Lights, Big City” won the bonefishing contest among his pals at Ambergris Cay — the private island in Turks & Caicos where he and wife Anne Hearst are building a house — by catching and releasing 49 of the 20-pound creatures. Pink Floyd legend Roger Waters came in second with 29, fol lowed by Steven Rockefeller, architect Campion Platt and twin antique experts Leslie and Leigh Keno.