Carew secured an important win over Kilgetty to rise above them and out of the relegation spaces in the Manderwood Pembrokeshire Division One.
Marcus Griffiths gave the hosts the lead from the penalty spot in the 19th minute, before adding another just five minutes later thanks to an assist from Charlie Perkins.
Griffiths completed his hat-trick in the 76th minute with an assist from youngster Archie Smith.
Adam Johns pulled back a consolation goal for Kilgetty in the 87th minute.
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