It's no secret that flounder love canned corn, and savvy anglers have been using it as chum for years. Now Double Strike Chum has combined corn kernels with its proprietary formula of ground herring, salt, and oils to create a new super-chum specifically for flatfish. It's available in boxes of 5 four-pound logs for $25, and can be stored for days in a cool place, up to three months in a refrigerator, and indefinitely when frozen. Special nylon mesh chum bags ($8) and plastic-coated wire cages ($16) are also available. The chum is available at many bait and tackle retailers nationwide or can be sent directly via FedEx for an additional shipping charge. Double D Bait Company, Bowdoinham, ME; (207) 666-8283; www.doublestrikechum.com.