Selwyn Robson, also 16 and on the IYB until he got a job helping deliver the Herald with his father, said: "It's a waste of time because people have got personal reasons why they're on benefits and the Government can't cover that."
Jodi Paraone and Oshyn Pokaia are both 17, both on the IYB and expecting a baby in November. Both pay board to their aunts and neither drinks alcohol. Jodi smokes, but said: "I'll have to quit."
Victor Rubie, who has had only odd jobs since being made redundant from a fencing business two years ago, was the most critical of the plan - partly because, even though he is 20, he can't get a benefit at all.
"Every time I go for it they find some way I can't get it. The people at Winz [Work and Income NZ] try their hardest not to help you."
Mr Rubie said the plan to pay only pocket money was "too inflexible".
"Circumstances change, you need money then," he said.
A spokeswoman for Social Development Minister Paula Bennett confirmed that the cash element in the new IYB would be "a set amount" - the same for all young people whether they are living with relatives or flatting. It will not be just whatever is left over after paying for essentials.
Asked whether it might be $20 or $40 a week, she said: "The amount is still being worked on."
But Glen-Paul Waru, who tutors the Mangere course and hosts his own Tuesday night hip-hop show Juicy on Juice TV, said National was "on to something" with its plan.
"It was an eye-opener for me when I started working with at-risk youth. I was blown away with the holes in the system and the inadequacy of Winz."
He said many families pushed their teenage children into applying for the IYB, arranging for aunts or uncles to declare that the children no longer got on with their parents, because the families needed the extra income.
Many teenagers lied about how much rent they paid so they could get more money. Most received travel allowances of $10 a day to get to class but got lifts with friends so they could spend the money on drugs and alcohol.
"I've voted Labour all my life except last time, when I voted no confidence," he said.
"I'm voting National, only because I've been working in this environment for a year and I see how youth are affected ... I think National is on to something. It's not perfect but it's a step in the right direction."
Mr Waru said life for his students barely extended beyond their home and their course.
"I took them to Warkworth two weeks ago and half of them had never been over the harbour bridge before."
INDEPENDENT YOUTH BENEFIT: WHAT IT MEANS
* How much: $167 a week after tax.
* For: 16- and 17-year-olds who cannot live with or be supported by their parents.
* National's plan: Pay expenses such as rent and power direct to landlords etc; pay other living costs by card, with restrictions; pay teens only small weekly "pocket money".