If there's a primary mover and shaker in this tectonic shift away from strapping on skis to standing sideways on a board, it's wakeboarding. A mix of surfing, water skiing and skateboarding, and a whole lot like its wintry cousin snowboarding, wakeboarding can be as challenging — or as simple — as you desire. With their massive surface areas, wakeboards are relatively easy to get up on. Once on top of the water, you can slash and carve the wakes if you prefer to keep things mellow, or use those wakes as one big launch ramp. Master the art of the progressive edge (progressively angling the board on its rails so that you dramatically increase your speed as you edge toward the wake), and you'll be able to launch skyward en route to a dizzying array of aerial maneuvers.