Invicta climbed back to fourth the Ryman Premier Division as they seemed to cope better a 3G pitch at Harlow on Saturday.
Defender Matt Newman gave them a great start with a smart finish after just 13 minutes.
Folkestone kept up the pressure and went further ahead with an own goal only two minutes later. That came from a goalbound effort by Ade Yusuff, which, if there is any justice in this world should go down as a goal to the again tireless Yusuff.
And, on 22 minutes the ever-lively Alfie scored following great work in the build up from Ade Yusuff and Kieran McCann – a great team goal in anyone’s book.
Foy pulled one back on the half-hour but Invicta went in at halt-time time looking comfortable and full value for their 3-1 lead at the break.
Yusuff maintained his happy knack of scoring just after the break to restore Folkestone’s two goal cushion and thanks to a strong defensive effort they held on to win despite Foy netting a second goal which proved very little consolation for the Essex side.
They even had a fifth goal ruled out for offside on what had proved a very fruitful afternoon for Neil Cugley’s side.
Invicta: Roberts; O’Mara, Blanks, Newman, Davies, Paxman, Heard, Everitt, Draycott, Yusuff, McCann.
Subs: Ter Horst, Starkey, Jackson, Hasler, Shaw
Referee: George Byrne
Attendance: 205