Serious flounder pros such as guide Mark Dushane of Summerville, South Carolina, say that live baitfish are numero uno for flatfish. Almost any type of small baitfish will work, but flounder can be selective, and you never know what they'll want until you start fishing. For this reason, Mark prefers to catch his own baitfish at low tide from salt creeks and marshes. He'll use a wide variety of baitfish, including mullet, menhaden, croakers, spot and mud minnows (killifish). Shrimp work for flounder, too, according to Mark, but take a back seat to minnows. Large baits (three to four inches long), which are best for big flounder, are hooked through the lips, smaller baits through the eyes. The bait is cast to the edges of jetties, pilings, bulkheads and other structure before being retrieved ever so slowly. When it comes to artificial baits, Mark likes white, pink, smoke, silver and yellow grub-tailed jigs, especially curly-tail models. Sometimes tipping a grub jig with a piece of natural bait will tempt a reluctant flounder into striking. Strip baits made from small mullet or other baitfish can be very good on jigs, too.