This book investigates the technical expansion of fly fishing beyond traditional trout angling into diverse fresh and saltwater environments. Charles F. Waterman, an experienced angler and outdoor writer, utilizes his extensive field knowledge to provide a comprehensive framework for targeting non-traditional species. The text argues that fly fishing techniques can be successfully adapted for a wider variety of game fish than commonly practiced by conventional anglers.

Experts recognize this work as a foundational text for anglers looking to diversify their fishing repertoire. Readers frequently note the practical, no-nonsense approach Waterman takes toward adapting fly fishing gear for larger, more aggressive saltwater species.