To be honest I have thought about using a formation quite similar to the 2-3-5 system. My thoughts are 2 DC , 3 DMC , 1 AMC and 4 Strikers so I guess it would be written as 2-3-0-1-4 and I would use the long ball down the middle on counter with offside and my team sitting back playing a zone defence and just giving away the centre of the park. I wonder how it would go but judging by this thread it might just be a decent set of tactics. This formation would be able to outnumber an opposition at the critical ends of the park so might be ok.