In 1975, he assisted as a mentor the Sligo county team that won that county's second Connacht Senior Football Championship. Upon being made aware that he would be taking charge of Sligo's training sessions, Barnes Murphy, the team captain, talked to McEniff. Murphy brought McEniff to Croke Park for the 1975 All-Ireland Senior Football Championship semi-final against Kerry ("although some of our friends in Sligo weren't too happy about that", Murphy told "The Irish Times" in 2007). McEniff, according to Murphy, could not provide advice to the team at half-time: "And I can tell you why, because they had also brought along John "Tull" Dunne were snubbed. They wanted to make a few changes, and I was wondering where these men where, to give us some advice". Sligo were routed by The Kingdom, 3–13 to 0–5.