In 1972, Bowles was a member of the first United_States_National_Karate_Association team to tour Europe. Since then he has represented the United States on seven different world tours visiting the following countries: Okinawa, Japan, China, Hong Kong, Thailand, Taiwan, England, Germany, Scotland, France, Denmark, Norway, Sweden, Italy, Panama, and Venezuela.
Bowles was the first person in the history of the U.S.K.A. Grand Nationals to win the Triple Crown: 1st place in Kata, Kumite and Weapons in 1973. With tournament championships spanning over 25 years, he has won the title of U.S.K.A World Champion six times.