Yesterday's report that 532 bass went belly up after a Wisconsin tournament proves that competitive fishing can be dangerous for fish. But it can also be life-threatening for anglers. Just ask 32-year-old Ian Card. On Saturday, during a fishing competition, he was fighting an 800-pound blue marlin when the huge fish suddenly leapt out of the water and impaled him angler in the chest, knocking him overboard. Card managed to get back aboard and to a hospital, where doctors said he was lucky to be alive.