Devils Thumb area

Poked around Devil's Thumb for some mixed climbing action. Left the car at 0700 with a temperature of -5. The approach to Lake Agnes was easy with hard hard-packed trail all the way to the tea house. Arrived at Lake Agnes at ~0830. Observed significant/severe spin drift and wind transport off of Niblock, Whyte, and Saint Piran. We opted not to follow the big beehive trail given all the drifting and walked along the northern edge of Lake Agnes which was supportive. We observed 5cm of new snow (wind transported?) on top of a 5-8cm wind crust on all north/north east-facing aspects. The slab was not reactive on a couple of quick hand pits we dug. Variable depth of unconsolidated snow (~20cm - 70cm) present under the wind slab. Given we were climbing we post-holed but on skis would likely be supportive (high risk of drumming/shooting cracks). Various gullies on the big beehive area look to have run within the last 48hours with debris at the bottom. Climbing was characterized by vertical trenching in many sections with intermittent but heavy spin drift off of Devil's thumb starting around 1500 and worsening as the afternoon progressed. Overcast most of the day with scant periods of broken clouds leading to an inversion as we descended from Lake Agnes back to the car.