First photo is of fresh wind slab that had cracked out 15 meters (~50'). It was 30 cm thick and 1F hardness. This was the largest wind slab we were able to fracture, although we got several smaller pockets to pull out. 

 I was skiing in the Tetons last week and hadn't been in the Wasatch for 10 days. With deep slab instabilities it is very difficult to gauge the safety of one slope over the next unless you are certain of its recent history and if it has slid or not. While in the Tetons I dug a few pits to get a general idea of the snow structure (yup, poor) and then used my probe the rest of the time to test the depth of the weak layer and the thickness of the slab above. This second photo shows my touring partner using the probe to test the snow structure in upper Grizzly Gulch. I find this a useful way of quickly checking the structure and takes very little time. Overall we were finding snow depths to be 1.5 - 2 meters with faceted layers about 1 meter down (although in some areas we probed it was less than that.) Until our snowpack grows substantially thicker (which it appears won't for the forseeable future) I am reluctant to get on any steep slopes.