A freestyle skier practices on a newly opened water ramp on Okanagan Lake in Penticton, British Columbia September 10, 2011. Built on an old military self-propelled landing craft, the new ramp helps freestyle skiers to practice during the summer months their aerials, moguls, halfpipe or slopestyle tricks before they perform them in competition on snow. REUTERS/Andy Clark (CANADA - Tags: SOCIETY SPORT SKIING TPX IMAGES OF THE DAY)