Busch was sentenced to life imprisonment for murder and 10 years for attempted murder - to be served concurrently.
Meanwhile, Mr Hayes said every year he relived the trauma of that day when Busch applied for parole. "Honestly, I can't even check the mail when I know it's that time. It takes two or three months of my life. I can't describe it."
Mr Hayes doesn't plan on attending any more parole hearings.
"It's just too stressful for myself and my family. It takes so much out of you ... if he was really sorry he wouldn't want to get out."
The hardest thing was knowing Busch had raped Ian and killed him to keep him from telling people he was homosexual, he said.
He feared the man was still a risk, working in vineyards on work release with vulnerable young people and being released on weekend or day leave to the Pahiatua area.
"I object to this. That's too close to the Wairarapa ... these people are very devious. He's not supposed to come into the region ... I'm just so sceptical. You can never let your guard down with this guy. I just have so many reservations."
Since being jailed, Busch had admitted at a meeting with Mr Hayes and a psychiatrist that he had raped Ian, he said.
"He's admitted that stuff but he's never been charged."
Busch, now 55, was paroled in July 2002 but recalled within four months because of concerns over unsupervised conduct with children with suggestions of grooming arising out of sexual tendencies.
He went before the Parole Board late last year when conveners heard he had completed the Te Piriti programme in 2002 and had made progress to the point he was on work release. The board also heard Busch had been released to attend church services with a supporter.
However, the board was concerned the prisoner hadn't undergone psychological treatment or counselling. In the decision released by the board, headed by Justice Warwick Gendall, it states programmes Busch had done did not "adequately address what appears to be a major risk factor, a component in the original offending, that being his understanding of his sexuality".
In the board's view, at that time, he still remained an undue risk to the community.
Meanwhile, three years ago the Whangaparoa community took their concerns to the Department of Corrections when they heard Busch was possibly to be paroled to the area. Busch makes his next bid for freedom in November when he is due to go before the board again.