My personal opinion, I think you have the hackling about right. I grew up into fly tying with a heavy British based influence, nobody wrote volumes on fly tying specific to NZ..... they were too busy fishing!
Seriously though, I think the one to one and a half turns is a more modern (dare I say Americanised) trait and the wee wets of old and hackle flies that were wingless were most often heavy in both the length and amount of wraps of hackle. Well, they are as depicted in most older British tying book colour plates.
I also tend to hackle on the heavy side. I can pinch, pluck or trim on the water (very hard to add material in on the water) or let the trout teeth trim, slash and cut to their desired length.
I think a lot depends on the waters you fish, how skinny the spring creek, or how full the raging torrent and the specific variety of trout as to how you prefer your soft hackles hackled. One mans spider could be anothers streamer.