I'm not a racer. I probably will never enter a yacht race. Up till now, I have not had much interest in the sport of yacht racing. So, my expectations were fairly low with regards to what I might get out of reading this book.
Serendipity played a hand in how this book came into my possession: I picked up a copy at a Friends of the Library sale, where I think I paid the grand sum of $1.00
However, I will say that just one lesson learned, on even just one page of this book (see page-115), would have been worth the full purchase price:
"In heavy winds, the main's leech is loosened by easing the sheet, allowing the sail to twist or sag off, minimizing weather helm"
Think of this book as the tune-up guide to use your sled most efficiently, and how to make it go faster by leveraging every aspect of the boat, its various systems, the wind, weather, and current. :)