I was once amused and confused by the rule at Portmoak stating "The cable must be attached to the glider and the tug before the tug takes off" until I saw the performance during the D Day landings!Agree with wot Mary said, I have tried in vain to persuade power pilots to try gliding just to see what it's all about but lack of interest prevails. They have been known to fly up the winch line in oblivion.