Having ended Launceston's decade-long wait for a major trophy, Alistair Taylor's men have set their sights on repeating the double success of 2010-11.
"That's the plan," said the captain after guiding his team to an emphatic eight-wicket win over two-time defending Greater Northern Cup and Cricket North champions Westbury.
"The end of March is next for us. We can do anything if we put our mind to it. The sky's the limit. We've got a great bunch of boys buying into what (coach) Andy (Gower) and I are trying to do here."
The Lions had Westbury two wickets down inside the first over and after a third-wicket 75-run partnership the Shamrocks collapsed to be all out for 97, losing two wickets for no runs four times and amassing five ducks.
Will Bennett (3-13), James Curran (3-33) and Tom Gray (2-18) did most of the damage although it was Ben Humphrey who broke the big partnership by clean bowling top-scorer Chathura Athukorala (50).
Dilan Sandagirigoda (28) steered the chase which was completed by an unbeaten third-wicket partnership between Taylor (34) and Humphrey (24) to complete a remarkable unbeaten campaign for the Lions.
Humphrey had the honour of hitting the winning run before launching the celebrations with his captain and then claiming the player of the match award.
"We didn't expect to bowl them out for 97 because they were 2-75 at one stage but spin did it," Taylor said.
"James Curran and Will Bennett were fantastic but so was Ben Humphrey.
"With the bat we knew we were just one big partnership away and Dilan Sandigirgoda batted really well at the top and it took a little bit of leadership from Ben and myself to try and see us home."
Having squeezed into the decider following a narrow two-wicket win over Devonport, the Lions were delighted to end their major silverware drought.
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Rowan Smith was the only member of the 2010-11 double-winning team still playing although former captain Jade Selby was among the crowd watching the overdue success at a sun-drenched NTCA Ground.
"It's been 10 years since our last first-grade premiership and it was time for us to get another one," Taylor added. "It's been a long road for our boys.
"It's hard to believe we went through not losing a game. We can't win a game on the North-West Coast normally but won all of them and some of them we shouldn't have but that just shows the level of maturity in this group and the culture that we're building here.
"We don't just rely on one person, we rely on 11 contributions."
Shamrocks captain Dan Murfet said his side was disappointed with their final performance having cruised through their semi with a 10-wicket rout of Riverside.
"Our boys were below what we know we're capable of but well done Launnie," he said.
"They were the better side today and deserve it."
Taylor returned the compliment. "Congratulations to Westbury. No doubt we'll probably see you towards the end of the season because you will come back strong."
Both captains thanked Cricket North and Cricket North-West for managing to complete the Greater Northern Cup despite the complications of COVID-19.
The victory also represented revenge for Westbury's win between the same teams in the Twenty20 cup final 10 days earlier.