But into his fourth season, Hammett has been unable to change the Hurricanes' DNA, which has often made them lovable losers throughout their Super 15 history.
They are far from being cannon fodder. But there is still an unruly core to what they do - Hammett has been unable to instill the tough-minded ways of the Crusaders, his old team.
Around the flashes of fabulous football, the Hurricanes failed to guard possession and dropped off tackles. When they had a big lead, they couldn't turn the screws.
At the death, with the game still in the balance, a loose carry and loose lips cost them possession and the penalty which got the Waratahs to safety.
The Hurricanes remain a riddle that another coach will have to solve.