When preparing for a bonefishing trip, I needed to learn to cast much further than my skills allowed. I had spent years fishing in tight spaces on small creeks and thus never needed to cast over 30 feet. By reading and studying the diagrams, I was able to learn how to cast up to 90 feet. I even won a casting competition based on distance an accuracy. If you don't have time or money for advanced casting lessons, this book will help you.