Wind Slabs forming on Hector South Ridge

Skied 2 beauty pow laps in the glades and got turns all the way back to the road (got lucky in the trees). On our first lap didn't notice any signs of wind slab but an hour later on our second lap the wind had picked up a lot and you could feel the upper snow changing quickly. The wind was producing visible wind transport and I would expect that direct lees will reach a tipping point soon but we couldn't see anything due to position and poor vis.