One source noted a slight decline in Coulon's boxing style after the death of his father Emile E. "Pop" Coulon on July 28, 1911, with his telling loss to Kid Williams three years later in June 1914. From July 28 though December 1912, Coulon took a six-month boxing hiatus which may have reduced his competitiveness. His unwillingness to take a new manager after the loss of his father, may have simply reduced his ability to schedule frequent bouts with top boxers and thus reduced his incentive to train. A higher percentage of his better publicized fights in late 1912 were draws, with a lower percentage of wins by decision of the referees.