Intentionally ski cut the top of the NW run off of Boullion Peak, knowing there was a shallow but firm slab sitting on top of the rain crust from the weekend. We could clearly identify the size of the slab from the ripply/pillowy texture of the slab vs the smooth, soft, loose snow surrounding it from the top. It ran about 100 ft, slowly, and dissipated into the soft snow below.
We skied just about every other aspect of the peak and saw no other signs of wind loading. There was clear wind scouring on the S and SW sides, with very small cornices forming on the NW ridge. Wind was calm at the summit all day. Most W-NE facing snow was soft and not cohesive, 8-12" deep ATL with a supportable crust underneath.