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.

Shelley Andrews came out of Oak Bay High School to become one of the greatest Canadian women's field hockey players of all-time. She was a tower of power on the back line and controlled the game defensively during her years of playing internationally for Canada's national team. With Shelley playing over 100 times and anchoring the defense, Canada turned into a field hockey world power in the 1980s. Shelley was selected female athlete of the year for Oak Bay High in 1971, UBC female athlete of the year for 1975 and Greater Victoria Female athlete of the Year in 1987. But it was on the field hockey pitch that the native Victorian truly shone as she rose to become an Olympian, World Cup medallist and one of the top players on the planet. Shelley co-captained Canada to the silver medal at the 1983 World Cup, to the bronze medal at the 1986 World Cup and to fifth place at the 1984 Los Angeles Summer Olympics.