There was another boom in the early 2000s — dairy; many traditional sheep farms on productive areas were taken over by dairy farmers, which had a huge impact on land values and environmentally, O'Sullivan said.
Eventually, the O'Sullivans sold the family farm, and all the fences and hedgerows that the two generations had spent establishing were taken out.
The family was still keen to remain in sheep farming and, in 2009 bought Pukenui Station, a 1287ha property in southwestern Hawke's Bay.
Tom O'Sullivan had the opportunity to give up his corporate career, in which he had various roles in agri-management and marketing, to go hands-on farming.
The property, farmed by O'Sullivan, his partner Rachel and daughters Ruby (8) and Tess (6), runs 4500 Perendale ewes, 1500 hoggets, 800 cattle and 100 red deer.
During that 10-year farming career, strong wool had not got any better, and he described it as a "critical point" for the wool industry. He was "horrified" at the strong wool situation and eager to be part of the solution.
It had got to a point that shearing had become such a cost that he only shore once a year; in full year 2018-19, wool revenue represented a mere 4 per cent of total farm revenue and, for the first time, wool was a cost to the business at $6506.
The family was now only shearing for animal health reasons, and the situation for farmers like himself was "deadly serious", he said.
He was asked to join the Campaign for Wool New Zealand Trust by Wright Wool's Philippa Wright, a passionate advocate for New Zealand's wool industry who was made a member of the New Zealand Order of Merit for her services to the wool industry and sustainability in this year's Queen's Birthday honours.
Campaign for Wool was a global endeavour initiated by Prince Charles to raise awareness of the benefits of wool. It has five member countries — the United Kingdom, New Zealand, Australia, South Africa and the United States.
In New Zealand, it was funded by strong wool growers and although it was limited by funding, it was totally focused on promoting the key attributes of wool, O'Sullivan said.
Feedback from Wool in Schools had been "overwhelmingly positive"; a shipping container had been converted into a "wool shed" that had been travelling around New Zealand educating school pupils about wool.
Last year, it was hosted by 15 schools in the North Island and 17 in the South Island, and bookings for term one and two next year were nearly full.
Wool in Architecture, to educate young New Zealand designers and architects on the benefits of wool, would likely be a webinar presentation early this year.
With the anti-plastic revolution, O'Sullivan believed the level of opportunity facing the industry had never been seen before. There was a "huge groundswell" of anti-synthetic and anti-plastic, and a demand for wellbeing products.
Strong wool was not just carpet wool, and research and development and technology needed to be embraced.
Marketing was key and farmers' trust beyond the farm gate needed to be built.
"There's a hell of a lot of mistrust with farmers across New Zealand in this situation we are in" he said.
O'Sullivan said he would be happy to pay a levy to invest in the future of strong wool.
Wright said Wool in Schools had been "truly exciting" for the trust and the momentum had taken it by surprise. It was "incredibly simple but so effective".
"We want these children to look at the problems they see in their world and figure out how wool can be a solution to some of these issues" she said.
