Skiing is good as long as you’re going down the slope, after that, it is one long boring journey back to the top. Not for Troy Hartman, that guy’s hardcore. Troy straps on a jetpack along with the skis, which allows him to ski up the slopes, like the one in the video here. If that sounds crazy to you, know that Troy also has a penchant for jumping out of exploding planes and high rise buildings. Wonder how the propeller skis would compare to this one.