The spectre of double bunking 130 prison cells spurred both sides of the crime and punishment debate yesterday.
Corrections boss Ray Smith flagged it as an option to accommodate an unexpected blow-out in the prison population.
Rejecting any sound correlation between the practice and increased violence, he said: "If you do it well, it's fine."
Corrections Association of New Zealand president Alan Whitley disagreed. "We call it overcrowding." He claimed it rendered prisoners "tetchy" and piled pressure on staff.
Sensible Sentencing Trust founder Garth McVicar supported the move, citing taxpayer benefits and a welcome departure from current "hotel-like" prisons.