I bought a Micover windscreen for my Videomic Pro. I havent actually tested it skiing yet, but watch this video, it has better results then the official Rode windscreen. For half the price and better results, its a good purchase.
http://www.youtube.com/watch?v=9Kl2dff1jDk
http://www.amazon.com/Micover-Slipover-Windscreen-RODE-VideoMic/dp/B0055E8HZG/ref=sr_1_4?m=A583JQOKI24QV&s=merchant-items&ie=UTF8&qid=1382119031&sr=1-4