Sharks taken by fly
Inshore: Spinner, Blactip, Lemon, Bonethead
Offshore: Thresher, Mako
Use white streamer flies. There's a youtube video about fly for baby Bonnetheads and Lemons.
It says that since a Shark blinks right before striking, when it comes close, stop moving the fly. Have some heave tackle, even 2ft Bonnetheads bent this rod over and tested the drag.