Lot's of good data coming in, but let's drill down a little deeper: are all the groomed runs hit every night, or only every second or even third night?
At Whitefish, there are normally roughly 60 runs groomed at night, out of 108 named "runs". There is some variation to which runs these are. There are some runs that are NEVER groomed, largely because they are more treed "areas" than trails. The tree density in those areas can vary tremendously.
Is there a lot of variation in individual staff groomer's skill/finished product or does management maintain a high overall standard?
I haven't seen much variability, except during spring conditions, when you might see issues due to clumping build up on the groomer equipment. I'd call it an exception, rather than business as usual. The big variability might be the hour the trail was hit, with trails groomed just before opening being more clearly "perfect" than those groomed immediately after the area closed the night before. So you could have EIGHT inches of snow on a groomed run. When I first moved here, I would not have considered that to be a groomed run, but I do now.
On nights with soft snow conditions is the result lots of ridges/steps between passes or do the groomers take the extra time to even those traps out?
Generally those are groomed out. Not saying I've never ever seen it, but once again it's the exception.
How many black diamond runs are groomed?
Very few. I can list them. Heap Steep, Upper Langley, Powder Trap, No Name, The Chute, Kodiak, Gelaendesprung. (Then we have some "recent blacks" that are usually groomed and only black due to small sections that have proved to be high injury areas.) None of these are groomed everyday. Some of those are even in the rarely category. Most blacks here are not groomed. In fact, most are treed. There is an exception, 1000 Turns, which has a high accident history, but once was a green. That is groomed daily. That'll tell you, in answer to the next question, that it does not need a winch.
Do these BD runs require winches for the cats to overcome the gradient?
Most do, but maybe not for their entire length. I assume that is why not every one gets done every night. In fact, some might be only done twice a season (Kodiak?). On the other hand, depending on snow conditions and time of year, you might think it was just groomed and in fact it was done several days ago.
I'd have to say that most of the black terrain here is not groomable, winch or no winch. We're known for tree skiing. Occasionally those trees are thinned, but really not as often as many would like. I've noticed that the Tree Farm area has really gotten overgrown. It used to thin out as the season progressed, not anymore. We had a huge winter and even towards the end, things were tight in one section that used to be popular.
More specifics about the conditions of every trail here can be found in my guide.