At 06:03 04 March 2020, Steve Leonard wrote:
The "mini winch" could also be a car and an air tow (200 foot
or so) rope.
Keeps you from having to buy and maintain additional
equipment.

Steve Leonard

Yes, hard to know why you would want to go to the trouble of
an electric winch? Presumably you are thinking of a battery
powered electric winch? Unless you fly from a site with no
winch or aerotow facilities why bother?
If you are at a normal gliding club just take a proper launch to
a sensible height and keep what little power you have in your
tiny batteries for the retrieve?
Dave W