pierrec45 said...From People's magazine:
"Another new sport is boardsailing on the West German-made "Windglider." (Sailing aboard the lighter, shorter American-made "Windsurfer" will be an exhibition sport only.) Men and women compete against one another in this event, which requires the athlete to grasp the wishbone-shaped boom and maneuver the Windglider around a three-buoy, triangular course. Although the sport was invented in 1967 by two California engineers, one an avid sailor, the other a fanatic surfer, look to the Western Europeans for medals."Perhaps that's my problem with fatigue: me grasps the wishbone-shaped boom too hard when sailing !

No, your board does not have the necessary negative tail rocker to prevent the out -of-control phenomenem called "planing" .
Actually, that's where the sport started to go off the rails. Higher winds really require larger boards ..