I have also had a go to make a tactic based on a strong TM forward, but failed miserably. As mentioned the problem are the croses. Most of them get blocked, those that aren't are low ones or are directed to the oposite winger. The only croses that the TM gets to, are the ones taken from throw ins or from full backs. Thats what I have noticed, but again I only play Lower league clubs, so not the best players. Hope this isue is fixed in FM12.