For many years, Moffat also served as an "advisory coach" to the Princeton football team. Contemporaneous records show that Moffat was active in coaching the team. For example, the undefeated 1896 team is listed as having "no coach", but a report published that fall in "The Harvard Crimson" noted that "Alexander Moffat '84 has charge of the team and is being assisted by Lea '96 and Morse '95." According to an obituary, Moffat for many years after his graduation "acted as coach, umpire and referee and made practice of going to Princeton nearly every season to aid in the training of the football team." Big Bill Edwards, who played at Princeton from 1896 to 1899, later wrote of Moffat: "His interest in the game was great, and he was always ready to give as much time as was needed to the coaching of the Princeton teams. His hard, efficient work developed remarkable kickers. He loved the game and was a cheerful, encouraging and sympathetic coach."