Lawn Care Service of Cedar Park 100 E Whitestone Blvd Ste 148, #166 Cedar Park, TX 78613 (512) 595-0884
Up + Box + L1 to kick hard
Down + Box + R1 to kick slow
I saw it in practice. Just try to go there. I'm not sure whether L1 for hard kick or the other way around.
L1 & R1 are used after the power bar to change the direction of the free kick.
I've tried them couple of times but never really got it to work well.
Basically if your playin your friend and line up a free kick for the left corner, hold R1after square to shoot for the right corner instead.