Doyle did the tactical sly fouls, shirt pulls, little clips here and there just like Hamer does now, but wasn't as blatant as Hamer so got away with more. He had that knack of knowing just how far to push it with refs too, who would often let him off for fouls others would get booked for. He was also able to reign it in when he was already on a booking. It is still early days for Hamer, and clearly his aggression is part of his game which will be part of the reason MR signed him, but we need his aggression to be more controlled, which hopefully it will be from hereon.