Book excerpt: One of the great fly fishermen of modern times offers the secrets that allow some fly fishermen to land trout when others fail. Anew book by Dave Whitlock, author of some of the best books on fly fishing ever written, is a reason for fly fishermen to celebrate-and the aim of this book is simple. Whitlock wants to take the guesswork out of fly fishing and pass on the wisdom hes accumulated over decades on the water. Fly tying is broken down into simple steps, and Whitlock stays grounded in the practical importance and relevance of every fly in the book.