I've seen 8 foot crowns on SM avvys before. One must pay attention to the "bed surface"
when blowing snow on steeper slopes.
One related note: years ago at JH we had a prominent ropeway Engineer come by and inspect our chairlifts.
He climbed up a Riblet double's tower and demonstrated how easily one could get the tower to swing side to side
but not so easy to get it to swing parallel with the ropes. Why? Com line stabilized the towers.....
So, Perfect North musta had loose Com line clamps........ :D
Carl