Sensei Ingebretsen has been practicing martial art since 1974, and holds the rank of shichidan in kenpo karate (through the American Jujitsu Institute) and rokudan (sixth degree black belt) in Danzan Ryu Ju Jitsu (through Kilohana Martial Arts Association). He is ranked Hapa Lima Kekele’ele’ele (fifth degree black belt) in the Kaihewalu family lua system, and is a kumu lua (instructor) of the art. Hans also has the rank of godan (fifth degree black belt) in Ken Ju Ryu Kenpo Ju Jitsu, received from Shihan Russ Rhodes, founder of the Ken Ju Ryu System. Hans is recognized as rokudan in both the Pacific Jujitsu Alliance, and the Hawaii Martial Arts Society. He has received an instructor's certificate in Inayan Kadena de Mano Escrima from Suro Jason Inay, the head of the Inayan System of eskrima, and also has a sandan (third degree black belt) in Kodokan Judo through the United States Judo Association. In 1993 he was awarded a Renshi grade teaching license in Danzan Ryu by Professor Sig Kufferath, the Headmaster of the system, with whom he trained for 14 years. He is the president and one of the founders of Kilohana Martial Arts Association, and served for 11 years as vice president of Kilohana. Through his martial arts marketing business, Zanshin Enterprises, Hans promotes many seminars and tournaments. A former member of the San Jose State varsity judo squad, as well as other teams, he now coaches his own judo team, and is also active in promoting sport ju jitsu competitions. His own tournament, the Mokomoko Invitational, has been held annually since 2003, and includes competition in karate, ju jitsu and eskrima. Hans is a certified instructor in Danzan Ryu Ju Jitsu, Ken Ju Ryu Kenpo Ju Jitsu, Kodokan Judo, Kenpo Karate, Hawiian Lua and Inayan Kadena De Mano Eskrima.