1992 was a pivotal year for Moynihan, when he lined out for the St Brendan's team that beat St Jarlath's College of Tuam to win the Hogan Cup in the All-Ireland Colleges Final and was also noticed on the Kerry U21 team that won out in Munster.
In 1992, Moynihan achieved significant success with both his school team (St Brendan's) and his provincial U21 team (Kerry).