Top all time shelf. What a great applied scientific approach to the art of forecasting wave quality.
Especially the section on sandbars opened my eyes and intuition to a world I was blind to before. Since then, I have scored numerous times at Ocean Beach and Linda Mar, two notoriously bad or good for the same tide/swell/wind (and epic in the case of OB), most of the variance dependent on the sand bar quality.
Also the bathymetry discussions were really nice and more applied than other books I've read that chalk it up to bathymetry and go no farther. I now have a better understanding of why Linda Mar diffracts waves to always be perpendicular to the beach. Best of all, the knowledge is not in a vacuum, I have seen it, applied it, and expanded my intuition to the point I find it incredible I couldn't see it and intuit it before. But it is definitely true, I was surfing for years blind to this stuff.