Rocks suffered there first home defeat of the season on Sunday afternoon as the visitors ran riot in the second half to take all three points.
Cougars went two goals up after twenty minutes before Sonny Kirsopp
pulled one back for the Rocks with the assist coming from Owen Welsh.
Rocks nearly levelled five minutes later when Sonny Kirsopp
headed an Owen Welsh corner which was pushed over by the visitors keeper.
Second half it was mostly Cougars as Rocks crumpled, letting in two goal in the first 3 minutes of the second half.
Cougars added further goals on nineteen and twenty nine minutes of the second half as the visitors walked away with all three points.