Many, many years ago (like 35) my wife and I lived in Maryland, and we briefly took up skiing. We skied big mountains like Roundtop (vertical feet 550). We were too cheap/poor to buy expensive ski wax and used silicone spray. It worked wonderfully on cold snow. When the temperature reached above 32F and the snow got soft in the sunshine, the silicone worked just like glue: One could stand on a steep slope, skis pointed downhill, and be unable to move. PAM, ski wax, oil – OK. Silicone – be prepared for surprises. We had lots of surprises, but still had fun. For a real thrill, try silicone spray (I don't even know if it is still available) on your plow. Let me know how it works!
PMH