I bought my yammie in 2006..saw this on Yamaha and decided to put 15,000 $ into my sled.. We do not have enough open stuff for a heavy sled. My sled when under 10 mph it will sink just like a trail sled.. you are better off on a 2 stroke here in the Gaspésie.. 4-Strokes are for open areas like out west or trails. I rode my yammie this year once, in 3 feet of fresh pow.. it was great.. but in the thinner stuff its a bitch.. jack