The sun has burned through the early morning marine layer, and the breeze is gentle and warm enough for me to abandon my hoodie. It looks like a perfect day to head out onto the Pacific Ocean. But as soon as we exit the harbor walls at Marina Del Rey, near Los Angeles, the 29-foot sport-fishing boat starts to heave. “We have some great waves out here today,” says Kelsey Albina, one of my guides for the day.