Robbie Swordy hit two and the other goals were shared between Luke Strangeways, Rhys Hogg, Kyle Jeffrey and Jayden Swordy.
The Fishermen still have nine games to play and can still have an impact at the top end of the table.
Alan Macfarlane’s side go to Gosforth Bohemians Reserves this Saturday, while second-placed Morpeth are at home to third-placed Cramlington Town Independent.
Ross Donnelly’s young side are looking good for promotion and a win would stretch their lead ahead of the chasing pack.
Rothbury could be without leading scorer Adam Bains again after he suffered a broken hand and has had it in a cast.
The Reds host bottom side Forest Hall in Division One looking to move back up the table as they also have games in hand on the sides above them.
Tom Macpherson’s team also have nine games to go and will be looking to secure another top-five placing.