agreed John - while the book focus is on the importance of stock fit & the 5 dimensions that represents, it also covers eye dominance, shooting stance, shooter confidence, etc.
as a side note, and before acquiring this book, some time ago I Purchased a used Friends of NRA Sporting Clays Browning Gold. When it arrived home, it was obvious the prior owner did a lot of shooting with it, and didn't care to clean it very often - so stripped & cleaned with Flitz and elbow grease -beautiful gun. Then when I put the stock back on, noticed the stock had cast and palm swell - The prior owner put a custom stock on it (and didn't mention this on his listing)! So researched cast, and fortunately the guy was a right handed shooter (cast off). So off to our field with our clay thrower - that gun just smoked em' - then doves in our field later that fall with same result. I learned a lot from just that experience, how cast can center your eye down the sighting plane, etc...........and how lucky I was that it worked out -Once I discovered the stock had cast, my first thought was - worst case scenario is to buy another stock - not a big deal..............really did luck out...............