I am not sure about Bonito...but you can buy mullet and squid at Half Moon Marina and at the Sunbury Crab Company, both in Midway...frankly, if you are going to fish for shark in St Cats Sound, or off the beaches of St Cats or Ossabaw Island, just bring a cast net...big mullet and Menheiden schools are all around this time of year...as are the sharks...atlantic sharpnose, bonnetheads, black tips, bulls, and hammerheads are all around the beaches and sounds this time of year...they’ll eat just about anything thrown in the water...