The New Zealand Herald reported in 2006 that he has worked as a consultant for Te Ohu Kaimoana, an organisation devoted to advancing Maori fishing interests. It is also reportedly the sole voting shareholder in Aotearoa Fisheries, which in turn owns half of the major New Zealand seafood company Sealord. The other half is owned by a Japanese company, Nissui, which is also a shareholder in Japan's whaling fleet.
An experienced public relations agent, Michael Smith, whose former company took on a contract for Japanese whalers nine years ago, likened Mr Inwood's role to "representing seal clubbers".
Mr Smith's firm, Shandwick International, ran into trouble running a campaign on behalf of the Japanese Whaling Association. The company also had a contract with the International Fund for Animal Welfare to run a campaign in Britain against fox hunting - a deal which Shandwick lost when its whaling work became known to the animal-welfare activists.
In retrospect, it had probably been a mistake to take the brief, Mr Smith said. "It was just a case of the Japanese were sick of coming to Australia and getting ambushed everywhere, they wanted to get their own story out."
Mr Smith, who is not pro-whaling, said Mr Inwood would continue to face an uphill battle to sell his message, but that it would be unlikely to affect the whales themselves.
"I don't think the Japanese really care that much about public opinion in Australia."
Bob Burton, author of Inside Spin and an observer of the whaling industry's twists and turns, said Mr Inwood was a valuable asset for the Institution of Cetacean Research but the public relations battle could not be won.
"It's a bit like the asbestos industry - they are defending the indefensible, and the strategy is to keep on stalling. In the long term, though, it's hard to see anything other than the strategy unravelling."