Moore told the victim it was the first time he had raped anyone.
Once he had finished, he ordered the woman to remain in the toilet while he made his escape.
Because of that, she was unable to record his number plate but police got their man when they trawled through CCTV footage.
Judge Michael Crosbie, at sentencing, said the effects on the victim were "as profound as any I've ever read".
"You preyed on her with devastating consequences," he said.
Moore had no previous convictions, the court heard.
He was a minimum-security inmate at Rolleston Prison, his recent parole report noted.
"He is described as respectful and compliant, and there have been no incidents or misconducts," panel convener Jim Thomson said.
Moore was assessed by a psychologist as a below-average risk of further sexual offending and was therefore not eligible for group-based treatment, the board heard.
He was midway through a course of eight one-on-one sessions with a therapist and had completed the Drug Treatment Programme, Thomson said.
The board, however, highlighted a lack of "offence-focused treatment" undertaken and said that must be addressed before Moore could be safely released.
The prisoner will see the Parole Board again in April next year
Thomson requested an updated psychologist's report in preparation for that hearing to determine what else could be done to assist Moore.
He was quick to point out to the inmate that there was no guarantee of him being released next year.
Moore's sentence expires in October 2024.
rob.kidd@odt.co.nz