You can try your target man on attack duty and two wingers on support duty. Give your wingers instruction to aim your target man and float crosses on your team instructions. Works better if you dont have an AMC.
Who is your target man, posting his profile would help.
If hes a tall strong targetman, you generally want to float your crosses while crosses are aimed at him, playing another striker up front with him will help, I've found a poacher is a good fit as he stays in the box to feed of the target mans knock downs.