Fellow Floridian and competitive surfer Kelly Slater was a big source of inspiration for Marks growing up and still is today. In late 2020, she told Sports Illustrated that in addition to Slater, her role models included "girls I just thought were super gnarly," such as Serena Williams, Simone Biles, and Lindsey Vonn. "They were just so into what they were doing," Marks said. "That's where the best surfers come from, too. They just genuinely love surfing."