The Sailors now move on to the tournament semifinals on Wednesday against either Wyoming or Zeeland West.
Scoring for the Sailors were Abe Freye and Ethan Brow.David McNiff and Hayden Yaros had the assists.
In goal, Keegan Dekuiper earned the clean sheet for the Sailors.
Mona Shores is 9-2-1 overall and 6-2 in the conference. Reeths-Puffer falls to 2-7-4 overall and 2-4-1 in conference.