I've been reading this thread and trying out some of the tips here myself. And I find that it's true in most part. As Mauras said, it was easier in previous versions, yes but maybe that was because the AI defence was not as good. In WE8LE they really stick to you like glue and cut out the cross. Initially my though was the same as Mauras the heading way too difficult in this version. Then I read the post about using your rdar to spot the open man, and guiding your cross and player. (prev. I too never looked at the radar at all)
Using R2 to reposition and justle does work, but also depends on the cross coming in. Just hitting and hope does no good anymore, since the cross will go to where the palyer 'WAS' standing (which is usually covered by DF). You either have to lead, lag or go over (R2) when crossing.
When to use R1, R2, (none) combined with single, double or triple tap is totally up to you and the situation should dictate which is better to get the ball to your player.
Practice often and you'll soon get the feel for it.
After trying out various techniques I am slowly but surely improving my conversion of headed goals in WE8LE now. Can score more regularly now, although I'm not a headed goal machine yet. But I have now scored some great jumping powered headers, quite a few glancing ones, and many where you just nod in slightly ahead of the DF. (ball against head or head against ball ha.ha.)
I'm using Real Madrid in my ML. The strange thing that I can't understand now is that 90% of my headed goals are socred by Owen. His jump and header, physical stats are not the best. I have Martins in there as well, with higher jump and header, but doesn't seem to score that many.
Right now i'm imporving my CB's in training to get them to convert more headers during set plays. Also scouting for some strong young players with great header stats to get in there as a 'target man'. Against some teams with big pwerful CB's, Owen alone can't muscle his way thru (using R2) to get his head to the ball.
Well just my latest take on this rather old topic.
Cheers mates.