I'm not being entirely facetious when I say this, but he could make himself invisible.
Seriously, I'd be watching him in the offensive zone, lurking just outside of the play, when all of a sudden whoever was supposed to be checking him would forget all about him and start chasing the puck carrier or move to the front of the net. I'd be yelling at the TV because my team was leaving one of the best goal scorers ever all alone in the danger zone... then Hull would drift into the slot and Oates, or someone like him, would thread a perfect pass to a miraculously wide open Hull, who would totally bury it. And all the defensive players would suddenly look around like they'd never seen him before.