Regarding Russell I've never quite understood why the bunkering at Yarra Yarra is quite bold, elaborate and plentiful (not unlike Mackenzie's) but Parapararumu's is the opposite. There are very few bunkers in NZ, those few are very simple, almost boring. Does anyone know the reason?
I would guess this is a combination of three factors:
1) Budget - Budget is always a factor in operating courses in New Zealand, which has such a small economy.
2) Neighborhood - Yarra Yarra is right in the middle of the sand belt, and all of its neighbors have the same fantastic bunkering, so it would have been hard not to bunker it up, especially since
3) The Morcoms - were resident in Melbourne and are really the ones who built all the bunkers at Yarra Yarra, and they didn't go to New Zealand.
I think your question is similar to "Why doesn't Whitemarsh Valley have those great George Thomas bunkers?" It's because those great George Thomas bunkers are really Billy Bell's, and Thomas hadn't met Bell before he moved west.