The squad, who plays out of the Silver Fox Curling and Yacht Club in Summerside, held a win-loss record of 5-1 through the double round robin.
They went on to face Charlottetown’s Emily Keen (3-3) in the finals.
It was a defensive match, with the first two ends resulting in zeros.
McLean would open the scoring in the third with a single point before the two rinks would exchange deuces in the fifth and sixth ends.
They’d again trade points in the seventh and eighth, giving McLean the 4-3 win.
The Summerside rink also includes third Lauren MacFadyen, second Ava Whitney-Coulter and lead Emily Vaniderstine. The rink is coached by Don Vickerson.
On the boys’ side, the Tony Nabuurs’ rink didn’t take an easy route to the finals, but they got the job done.
The Montague/Charlottetown team went 3-2 through the round robin, tying for third with Summerside’s Alex MacFadyen.
Team Nabuurs would go on to eliminate MacFadyen in a tiebreaker 6-5, adding the winner in extra ends.
They’d go on to knock off another Silver Fox rink in the semi-finals, putting Justin Campbell’s team down 7-4.
In the finals, Nabuurs fell 2-1 after five ends but would rally back after a triple in the sixth to take home the championship by a 5-2 score.
The Naburrs squad includes third Parker O’Connor, second Alan MacLean, lead Noah O’Connor and coach Alan MacLean
The MacLean and Nabrurs teams will now have the choice to either head to the Atlantic Under 18 Curling Championships March 28 to 31 in Stephenville, Nfld., or the Optimist International Under 18 Curling Championships March 27 to 1 in Surrey and Langley, B.C. The runner-up foursomes will get the chance to go to the other event.