Smart spent the remainder of his career in the QSHL with the Montreal Royals and Ottawa Senators with the exception of one more season in the MCHL with the Montreal Vickers and the final season of his career in the OVHL with Eastview St. Charles. He recorded a career-high 66 points in 47 games with the Senators in 1947–48, then helped the club to an Allan Cup in 1949 as Canada's senior amateur champions. Smart retired after the 1950–51 season spent with Eastview.