If he's getting smashed by a tag, you have to mix it up.
Play him from the goal square, clear it out so he's one on one with the tagger, play Jurrah, Aussie and Watts from the 50 arc and put Dunn on the ball.
He'll dominate and create a heap of scoring opportunites.
They'll then be forced to switch a small defender onto him, creating opportunities for Wonna, Bennel, etc.
Obviously if we're pushing up into their forward 50 everyone's going to be further from goal, but equally as dangerous as he has the toe to beat his man running back to goal.