Dave Nadler wrote:
Careful !

It depends on the glider, launch mechanism, and weather.


"It depends" is good advice from Dave. to further illustrate the point,
in a nose dragger, you'd be generally advised to hold the stick back
to get the skid / nose wheel off the ground ASAP. However, if this nose
dragger happens to a 2-33 and the tow plane makes an abrupt start, the
skid will come off the ground by itself and the tail will slam onto the
ground and there's nothing that you can do about it. You'd be well
advised to start with the stick full forward in this case.

On a calm wind day, The starting position of the stick is not too
important, IMHO, because the controls are relatively ineffective at the
start. When the wind blows, it's another story.

Tony V.