There are a few days a year where it's pretty much impossible to glide across the top because it's so cold. Any good cold temp wax can help, but nothing can help the fact that the snow is bloody cold! Just like nothing can overcome the bad suction you get with spring boarding.
One thing that might help is a good base structure. Have you had a base grind lately?
No I have never had a base grind.....isn't that something you get when your base is really dinged up?