Groupers feature more often on restaurant menus than on anybody’s list of great game fish. Yet, when hooked, they put up a powerful battle. It can’t be called epic, since the fish surrenders after a minute or so of intense struggle; but as long as it lasts, you feel as if you’ve lassoed a tractor. Shaw shares a little-known, highly productive technique: casting around rock piles with jumbo crankbaits. Short of tuna fishing, it’s the toughest minute on the sea.