When Michael Kern came across a 14-wheeled "flowboard"--basically a skateboard-snowboard-surfboard hybrid--in 2001, he knew he had to jump on an opportunity. His 20-year-old company, Sport Technology, bought the licensing rights, then the original board-maker's company, and now also produces the Snowskate, which replaces the wheels of a skateboard with four mini-skis for free-footed mayhem on the slopes. It's available at major retailers, including Target, Walmart and Toys"R"Us, as well as through more than 60 independent toy, specialty and catalog retailers. Company revenue in 2010 was around $10 million, more than double the year before; 2011 revenue is close to $20 million; and Sport Technology forecasts $36 million for 2012. A bad-ass (and lucrative) crossover.