Tami Oldham Ashcraft knows this feeling.At the age of 23, while she was sailing the South Pacific, Ashcraft was caught in a violent hurricane.Determined to survive, Ashcraft created a sail from scraps of material and charted a path to Hawaii, which was 1,500 miles (2,400 kilometers) away.Having lost 40 pounds (18 kilograms) during her ordeal, Ashcraft was thin and haggard when she arrived.The 50-foot (15-meter) waves overturned her boat.Only the rudder, which steers the ship, was intact.Ashcraft was badly injured and disoriented.