You are asking about "hard head mullet" , aka striped mullet. These are not my words I just copied this from another forum.
"Ok so here's how we do it in the Everglades. We chum the water with old fashioned oats 1 large container mixed with a large container of garlic powder and enough water to make it stick. We put 1/2 this mix in the area we will fish to attract them. I use a size #1 three prong hook. I press any soft white bread onto the eye end of the hook, above the prongs. They usually feed off the bottom so we fish deep. Just wait. You have to be patient. They bite in a fast up and down motion. Like a jack hammer. We throw them onto the bank. On a good day we catch 20-50 fish a piece on a bad day as low as 3! No doubt you can catch these fish with a pole and bread."