early 80s, doing the volenteer thing on a kibbutz in israel, myself and a couple of the very lovely danish girls that were on the kibbutz too decided to hitch hike to the coast for a day at the beach. when we got there, there was a windsurf rental stand, and they were keen to give it a go. so i, being the expert, was going to show them how its done..
hmmm, kinda slippery deck though, but..
here, stand like this, one foot in front of the mast, one behind, grab the rope see, and just pull the sail out... whoa!
down i came, one foot on either side of the mast, full speed...right square

end of lesson..

but fortunately, the one girl was ,quite uh, kind hearted, and was able to nurse back to health..