There was a soaring club with a converted station wagon with a spool for winch launching that came to my little airport in Johnstown, NY many years ago. My first flight in a glider had a 200ft cable break! They gave me the piece of wire they had to cut out to resplice it for a souvenir.
I think it was the Mohawk Soaring Club out of Pittsfield, Mass, but it may have been one of the clubs around Saratoga, NY. Check with them.