In 1989, he became the head coach of Karate Nova Scotia – a post he held until 2001.
In 1992, he was named the head coach for Team Canada at the Fifth World Chito-Ryu Championships, in Australia.
When the National Karate Association of Canada held a masters division competition, he medalled in 1999, 2000 and 2001, holding several first and second place finishes in the kata and kumite classes.
In 2009, he was appointed chief referee for Karate Nova Scotia, taking over from Milton Bourque.
“He's passionate about his karate. He's a perfectionist. He probably knows more kata than anybody that I know,” said Bourque.
Bourque said Griffin “always strives to be the best” and to bring out the best in others.
The pair have officiated matches across the country and Bourque says Griffin is talented.
“He has a keen eye. He has a good control of the matches. He's one of the top referees probably in the country. He's well respected by all the different coaches and officials alike across Canada,” said Bourque.
In 2013, Griffin was named Karate Canada's 2013 Official of the Year. Also in 2013, he was the first person in Atlantic Canada to receive judging certification by the World Karate Federation (WKF).