thats like saying is surfing safe when your high, so many people blaze and go sking or snowboarding, some of the biggest pot heads i know that are my friends are really into snowboard, the weed is just going to highting your senses so you'll probablly do better this coming from a skier and snowboarder that does it all the time, just watch out for those trees and you'll be fine dude, you might even actually enjoy it