They were nearly dropped from the competition during World War I because of dwindling spectator numbers. Towards the end of the war, Norths' fortunes improved, playing quality and spectators numbers increased and they won 2 premierships in 1921–22 coached by Chris McKivat. Unfortunately, these would be their last first grade premierships and their last grand final appearance was in 1943. when an injury riddled North Sydney were beaten by Newtown 34–7. North Sydney's Captain-coach in the Grand Final of 1943 was the future doyen of rugby league broadcasters, Frank Hyde. Hyde, who was living in Lane Cove at the time, had been forced to switch from Balmain to Norths in 1941 due to the league's residency rules which stated that a player was required to live in their club's district. As Lane Cove was in North Sydney's district, the club protested to the NSWRFL and claimed Hyde from Balmain.