It’s a formation that was forced onto the Rocks rather than one adopted through choice.
But, after sealing a 3-1 away win at a combative Corinthian Casuals side, three at the back could be here to stay for the Nyewood Lane side.
With a number of players missing, assistant coach Robbie Blake opted to play Ed Sanders, Harvey Reed and Chad Field at the heart of the defence.
With Frenchman Richard Gilot playing a screening role that freed up the full backs to get forward and support Jimmy Wild and Jimmy Muitt who played up top.
Blake admitted that the formation only started to take shape in the second half with the switch of skipper Harvey Whyte to full back and introduction of Tommy Scutt for Josh McCormack, meaning Rocks started to get on the front foot.
Blake said: “As a coach or manager you may see decisions and have to make them with conviction.
“I thought at half time I had to make that switch by bringing Tommy on and pushing Harvey out wide and getting forward from there. There’s probably no one better than him coming from deep.”