I respectfully disagree. I saw some equally awful pattern setups with pac puke airmasses that we managed a snow because of nothing other than a lucky wave track before.  1997 was one. The difference imo was the crap airmasses used to be +5 instead of +8 or worse. As the torches get even warmer it’s getting harder to luck into a Snow from a lucky track in a bad pattern.    Lately there is another even more depressing phenomenon of waves that take a good track in a decent or even good long