Well done, Murray. ROTOMOA was the key word that was needed. Here is a very poor picture of one with the deck attached:
http://www.google.com.au/imgres?imgurl=http://images.trademe.co.nz/photoserver/gv/263990904.jpg&imgrefurl=http://www.trademe.co.nz/home-living/outdoor-garden-conservatory/lawnmowers/ride-on/auction-584127165.htm&h=175&w=233&sz=17&tbnid=xOGgZsfPcZrT0M:&tbnh=91&tbnw=121&zoom=1&usg=__wpRVvri2yr7qAe94PRFfY9kR-Yk=&docid=PeRavxX6KnVZ1M&sa=X&ei=Dv0RUszBCq6XiAeM9IGIAw&ved=0CEsQ9QEwCTgU&dur=528

If you follow the link to the page, it appears it was passed in at a no reserve auction in April 2013.