Hi dude, I always like to attack defensive formations!, my take is if a manager is thinking defencively(which personaly I dont like) then he is basicaly telling his opponent come and have a go! and I have no problem with that at all!!!, Im with you play 3-4-3 or 4-3w-3, set orders to hard attacking,mixed focus passing,hard tackling, close down own half, mixed passing style, zona marking,force counter attacks so you are bombarding him with attacks!, if the quality is quite close between the two teams then if you get the goal you need put on an extra defender if playing 3 or revert to a flat 4-4-2 formation uncheck force counter attacks and try and hold on to your lead.