using thermals

thermal cross country thermalling gaggle final glide wind vario contests speed to fly maccready landout sink motorglider sailplane racing water ballast lxnav parachute ground handling deviation center thermal flight instruction flight computer lift look outside outlanding rope break tost competition wave flarm checklists skysight convergence microburst far annual / yearly inspection spot tire preflight landing seeyou aerotow contest strategy decision making turn area task start gate turnpoints stress faa dehydration