Bill Daniels wrote:
Lippmann in Germany reports a winch launch to 950 meters (3100').
http://www.lippmann.de/hoistline.htm

Has anyone heard of a higher launch?

Bill Daniels

No but I did get a 2-22 to a solid 2000agl on an auto tow launch, with
fixed and moving pully on a 5000 foot runway, once,at sunset. It was
truly a special moment.

MM