World Surf League - Through the foam ball Photo by Chris White Media | Facebook
Dr. John Heath "Doc" Ball "1998 Surf Pioneer" Surfing Walk of Fame
Foam Ball Satori - The Surfers Journal
World Record Exercise Ball Surfing | OT 6 - YouTube
Guy sets record surfing on exercise balls - YouTube
NSW surfer Kalani Ball aiming for breakthrough year and focusing on competition - ABC News
Medium Economy Balance Training for Surfers, SUP and Water Sports. Advanced Balance Board for Multi-Direction, Free Rotation Stability Training for Pop-Ups and Rotation Power.