We've ridden the Xtreme in various flatland environments in the past couple of seasons, but Ski-Doo marketers hammer away at us about how versatile its 2013 Tundra Xtreme is in deeper snows. So we decided to hand it off to Snowmobile.com's mountain experts, Matt and Kevin Allred, to see what they would have to say. After they got over the shock of taking a seemingly large and ungainly looking utility sled with a pogo-stick front end on a trip into West Yellowstone's mountainous backcountry, they filed the following report.