OK, so I'm planning a Mount Hutt trip for later this year. The plan is to go for about a week and hopefully do some heli skiing. I'm prepared to lose a day or so to bad weather and I'm sure we can find a winery or go for a drive on the day(s) off. Now, I always have awful luck with snowfall. 7 years in the sport I've had 2 x New Zealand trips mid August with no snowfall, 1 x Niseko trip with 1 powder day of 10 on mountain, and we were unlucky enough to go to Lake Tahoe in Early feb this year which was a huge disappointment. This may be my last trip for a while so I want to maximise my chances... if I get a couple of good days I'll be happy. While I don't have to actually buy tickets at any specific time, I do have to make the call on a late July (to early august) or early September... what do the wise forum people think is the best option?