Ключевые слова: athlete, back view, balance, black, blue, blue background, color image, day, extreme sports, fun, high speed, kneeboard, kneeboarding, lake, life jacket, male, one man only, one person, one young man only, outdoors, people, speed, speeding, splash, sport, sportsman, square, stunt, summer, wake, wakeboarding, water, water sport, water sports equipment, water surface, waterskiing, wet, young adult, young man,