Rosemary Mair was even harder to get away, with 2-6 including one maiden from her four overs, while Watkin's fellow co-captain Hannah Rowe took 3-27.
The Hinds will now play the Northern Spirit at Bert Sutcliffe Oval tomorow morning.
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The Central Districts team and their Unreal Grass Wicket Wanganui allrounder Akhil Kumar finished the National Under 19 tournament with one win and two losses from their Twenty20 games this week in Lincoln.
After being hammered by the champions Auckland by 10 wickets on Monday, Central Districts got revenge the following day with a six wicket win in the opening Twenty20 game.
Restricting Auckland to 113-9, with Kumar not required to bowl but assisting in a run out, Central Districts then reached 114-4 at the end of 19 overs.
Wednesday's game was against Canterbury, who held Central Districts back enough to secure a narrow eight run win.
Canterbury reached 161-9 from their 20 overs, while Central Districts lost key wickets in the second half of their chase to bat out to 153-7, Kumar being dismissed in the last over for two.
Central Districts finished their tournament with a 28 run loss to Northern Districts on Thursday.
Northern were dismissed off the second-to-last ball for 160, with Kumar taking 1-16 from his three overs.
Again, in the second half of the run chase, Central faltered and batted out to 132-8, Kumar dismissed for a duck.