Forces on sails apart, which generally prevents heeling. Each sailing craft is a system that mobilizes wind force through its sails—supported by spars and rigging—which provide motive power and reactive force from the underbody of a sailboat—including the keel, centerboard, rudder or other underwater foils—or the running gear of an ice boat or land craft, which allows it to be kept on a course. Without the ability to mobilize reactive forces in directions different from the wind direction, a craft would simply be adrift before the wind. Accordingly, motive and heeling forces on sailing craft are either "components of" or "reactions to" the
Sporting-Sails Nick and Billy Smith tested the drogue parachute/wingsuit flying-like device on skis before attempting to try on a skateboard in the hills surrounding the Marin Headlands and San Francisco, California. On a skateboard, creating drag at will by deploying the Sporting-Sail during the descent enabled Nick and Billy Smith to control their speed and stability on steeper terrain. For many years Sporting-Sails was based in Ventura, California, close-by to Patagonia (clothing) HQ, where Billy Smith currently works full-time as their wetsuit developer. Currently, Sporting-Sails HQ's are back in the shadows of Mt. Tamalpais in Mill Valley, California. The Sporting-Sail logo