Smith remained a regular first team player for United until 1974, often in central defence. His future coaching mentor Jim McLean became manager in December 1971, and the following month his future managerial assistant Archie Knox became a teammate. In September 1973, Smith scored the only goal of the game as United defeated Dundee in the Dundee derby; he celebrated by kissing his boot, a gesture which he was later embarrassed by. He played in the 1974 Scottish Cup Final against Celtic, Dundee United's first appearance in a major final, but finished with a runners-up medal following a 3–0 defeat.