Andy wrote:
On Nov 26, 6:54 am, Andreas Maurer wrote:
one at 400 ft (non-connected elavator during winch launch).

Wow, that's impressive! Was the glider in an uncontrolled climb when
the bale out was initiated or had the cable broken?

I've read one such incident report, dunno whether it was the same
incident. Point is, most gliders climb just fine on the winch on their
own. Maybe not perfectly, but fine. The pilot waited until the whinch
launch had finished and then bailed out from more or less horizontal
flight. Bottom line is: yes, you can bail out successfully from winch
launch height.