Pobjoy is right.
The BGA regulate with a very light touch. Our insurance made us get our C's of A done in good time by approved repairers. For the rest, as TO it was my job to keep the winches and land rovers in good running order. No mean feat with 'common user' vehicles and people who were not awfully good at driving. I spent many a weekday evening repairing the clutch operating rod on land rovers. When we eventually owned a Tiger, this animal also fell into my purview - this is what you get for once being an aircraft engine designer. In the average gliding club you will find skill sets which can cope with almost any problem. In the ATC I guess everything had to be organised by HQ - wasting time and effort.
We gave up 'bats' quite early on as the visibility on misty mornings made for mistakes. I also banned reef knots in the wire as it tended to bu**er up our winch paying in gear. With a good tool, ferrules were quicker and did less damage.