After ending their initial season in third place, the Shamrocks had five first place finishes in the next six seasons. They reached the Mann Cup finals in 1953 but found the Peterborough team too tough. It didn't matter to 5800 Victoria fans who jammed the old Memorial Arena to see the action. That support gained the Rocks national prominence and allowed the club to import eastern players. Again, in 1954, they were unsuccessful in the rain and mud at Peterborough's outdoor box. But in 1955 the Shamrocks found the answer and they defeated their traditional rivals in the national final. The Mann Cup came to Victoria. The winning team included Tom Druce, Jim Bradshaw, Arnie Ferguson, Lew Landess, Bob Dobbie, Archie Browning, Nip O'Hearn, Joe Mitchell, Dean Blackstock, Ed Popham, Al Davies, Dusty Mair, Geordie Johnston, Alan Gill, Ralph Baker, Jack Northup, Jim Hetherington, Larry Booth, Red McMillan, Whitey Severson, Bill Bamford, Harry Irwin, Jack Thompson and Jack Bionda. Pickups included Derry Davies and Jake Proctor.

The Victoria Shamrocks were inducted into the Victoria Sports Hall of Fame on their 50th anniversary .The team was born with the opening of Memorial Arena in 1950 and they have enjoyed a storied, almost fabled, existence. The Shamrocks can boast that some of the greatest lacrosse players in the world were proud to wear the famous green and white. The Shamrocks won the Mann Cup Canadian Senior "A" championship six times --in 1955, 1957, 1979, 1983, 1997 and 1999 along with twelve league titles and eleven playoff finals. There was the heyday of the 1950s, the dry spell of the 1960s, the renaissance of the 1970s, evolution of the 1980s and the days of thunder in the 1990s. Through it all, the Shamrocks have provided us with so many memorable summer nights at Memorial Arena and have become an integral part of the Greater Victoria community.