On Friday, March 13, 2020 at 7:20:34 PM UTC-4, wrote:
Another aspect would make such a winch not very useful: a climb from 300 ft would cut the range considerably. I know pilots with FES planes that have hard deck of 1200 ft for the activation of the engine (same as turbos with gasoline engnes) when running out of thermals. Simply because climbing is much more absorbing than flying level with a FES (at least with the current battery generation)

If there is no other tow option available, and the difference is flying or not, it becomes very useful.
UH