Johnny Girvan, of Naseby, opted for hay bale construction for his mai mai. Photo by Gregor Richardson. : Mai mai 'war' between brothers-in-law

John Smith's mai mai near Wedderburn. Photo by Gregor Richardson. : Mai mai 'war' between brothers-in-law

Wanaka sports shop owner Mark Sanders demonstrates, with his two-seat portable number, that a mai mai does not need to be overly elaborate. Photo by Mark Price. : Mai mai 'war' between brothers-in-law

Jimmy Berney and John Niles, of Owaka, and Wally Melvin, of Balclutha, demonstrate the advantage a little scrub provides at the no-nonsense mai mai on Mr Berney's sheep and beef farm near Owaka. Photo by Chris Bennett. : Mai mai 'war' between brothers-in-law

Duck shooters (from left) father and son, Chris and George Clark (10), of Timaru, and Carl Stafford, from Oregon, with gun dog Jess keeping a watchful eye on proceedings, at Lloyd Harris' mai mai near Omakau. Photo by Gregor Richardson. : Mai mai 'war' between brothers-in-law

Tristan Fraser, of Dunedin, prepared the mai mai at Hoopers Inlet yesterday for duck-shooting. Photo by Peter McIntosh. : Mai mai 'war' between brothers-in-law