create you own. I was scared to, because I used others tactics in fm12,11 and 10, and as an american, am mostly confused by soccer tactics
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But... its very simple and requires little or no tweaking of a base tactic in order to be successful.
That being said, I always tactics that use IFs. They are incredibly effective when paired with a DLF and a deepish midfield. Remeber, you dont want CMs running too far up the field through the middle, that space is needed for the DLF and/or IFs.
Also, I've had a great deal of success with players who mostly play a strictly wide role like a winger, like Jesus Navas, as IFs. Even when they have to cut inside onto their weaker feet.
Dont forget the IFs need space that is otherwise usually already occupied by the striker/amc/cm.
Always use attacking fullback (support roles work here too) as they will overlap with your IFs and use that space out wide very well.