He maintained continuous liaison with the International Judo Federation and the affiliated national delegations for the purpose of exchanging on technical and administrative matters.

[1] In 1951, Gauthier represented the interests of Judo at the First Canadian Sports conference held in Ottawa.

Gauthier taught judo and self-defense techniques to members of the Royal Canadian Mounted Police, the military police, The Royal Canadian Air Force, the Salvation Army, the municipal police forces, the University of Ottawa Physical Education Department, the Prison and Penitentiary guards and at private civilian dojos in Canada and the United States.

He also organized and participated in over 200 public demonstrations, tournaments and championships towards the emancipation of Judo in Canada.

The National Film Board of Canada produced a video clip of his achievements in 1954 under the title: Judo Jinks.