Not Without Hope by personal trainer Nick Schulyer tells the story of what happened when he went on a fishing trip with three friends, two of them NFL players. When their anchor got caught off the coast of Tampa, Florida, they made the mistake of trying to free it by tying it to the stern of the boat and trying to yank it free. Instead they capsized the boat and they spent hours being tossed about in the freezing water. Only Schulyer survived to tell the tale (and write the book). Read an article on the tragedy in the Washington Post.