On Mon, 07 Oct 2013 18:30:59 +0000, John Marsh
wrote:

Oh!!!! So it,s OK to let your wingtip run along the ground during an areo
tow launch.?? NO NO NO Pull the bloody release when ever your wing is on
the gound THAT WILL SAVE YOUR LIFE ONE DAY

Depends on the glider.
For probably 95 percent of the gliders you are correct.

But for instance the AS 22-2 (forerunner if the ASH-25) has absolutely
no aileron control on the first 200 ft of the ground roll, so in most
cases it drops a wing. Since it is usually flown with full water , the
wing tip hits hard and it takes some time to pick the wing up again.

On the other hand, it's got a a tail load of about 120 lbs on the tail
wheel, so it doesn't have the slightest tendency to ground loop.
And with a wing loading of 10.5 lbs / sqft it's not going to take of
inadvertedly either.

So during an aerotow it is possible and safe to pick up the wing
again. In this special glider.

Winch launch is a completely different animal though.

Cheers
Andreas