I really don't mind either way, as long as you stay consistent. Even calling the hookings and all that would eventually lead to the players learning and not doing it so much. The problem with the refs is they keep swaying one way and then the other, which keeps players confused.
The consistency in-game has IMO, dropped substantially since the introduction of 2 referees.
I'd prefer to see the NHL get rid of the bottom performing zebras and go back to one per game.