Peter Yee with a couple of solid yellowtail. I've been diving San Diego for over 25 years. I've always had my own theories about what makes a good day — water temp, moon phase, tides, time of year. Every experienced diver does. But I wanted to actually test those theories against real numbers, not just gut feel. So I pulled every commercial passenger fishing vessel (CPFV) dock report filed in San Diego from 2021 through 2024 — four full years of data. Then I cross-referenced