Love the Gulp but NOT for mackerl fishing....lol
Really, they catch specks & reds better than live bait. A favorite rig is one of the Redfish Spinner Baits (single spinner with leadhead jig) with a glup 4" pogy or swimming mullet. Keep the bait off the bottom and you won't catch as many trash fish.
My secret weapon around oyster bars: Tennessee Shad SwimingImage crank bait. Reds EAT EM.
Good Luck.