I found it very informative, while also being highly amusing. The illustrations in this book are very entertaining.
This book is different. It may very well be the best introduction to flowing water on the market. Though it is supposed to be for advanced paddlers, the information and techniques it imparts are useful to boaters of all skill levels. It teaches you to approach a rapid and to figure out how it works, and what it will do to you when you get into it. Nealy's cartoons are humorous and engaging, and offer him a visual means of explaining a sport that doesn't generally translate well into print.
I generally re-read my copy a couple of times a year.