Hi, Rob! Here is one data point that may or may not be very relevant: I did Boundary in March 1996. With a 4WD pickup and chains, I couldn’t quite get to the usual trailhead from the east. I skied up above 12,000’ and set up a bivy. The next morning, I hiked up, saw a flock of bighorn sheep right on the summit, hiked back to camp, and skied out. 208 nicely linked turns before I ran out of snow. All the snow around my truck had melted by the time I got there.
