On a trip to New Zealand last year I met Tony Butt and Dave Jackman. Below are links to interviews with them and with Peter White who made paipo boards out of Muriwai, Peter still has a yellowed copy of the newspaper article. The interview with Tony Butt also contains the story of Mike Lawson and Charlie Straumietis (photographer and kneeboarder), both of whom live in OZ now as does Peter. There is also some links to information on Maori surfing and Duke Kahanamoku's visit.
Bob
http://mypaipoboards.org/interviews/TonyButt/TonyButt_2011-1123.shtml
http://mypaipoboards.org/interviews/PeterWhite/PeterWhite_2012-0203.shtml
http://mypaipoboards.org/interviews/DaveJackman/DJack_2011-1123.shtml