You no longer need steep hills or gravity to pull off difficult snowboard stunts, thanks to the work of six mechanical engineering students at the U. Led by Rosario Imburgia, these students designed a ski winch that is not only safe, but that is portable, easy-to-use and affordable. At its initial testing, the winch pulled its designers at 25 mph, but with a few engine tweaks, these students are confident they can get it up to 40 mph. "It really has opened up my eyes to how realistic it is for anyone to design and build a product to fill a gap in the marketplace," said team member Ben Bradshaw. Watch video at bit.ly/skiwinch.