During the 2004-05 season, the Shamrocks pulled together and won their first Georgian Mid-Ontario league championship.

This allowed for the Shamrocks to push for the dream of winning the All-Ontario championship, the Clarence Schmalz Cup.

They entered the provincial quarter-final against the Western Junior C Hockey League's Wingham Ironmen but ended up losing the series 4-games-to-2.

Later, the Ironmen went on to the final and lost to the Niagara Junior C Hockey League's Grimsby Peach Kings.

They entered into the league quarter-final series with the fifth seeded Stayner Siskins and found out that they were too much to handle.