Arc, I've only been gliding since 1982 so you have a couple of years on me.
'Conjoint' can work. Booker is an example, although I accept that they do not winch launch but this is due to a relatively short field length. Furthermore, they don't sterilise everything whenever there is a first solo taking place; perhaps this is the ACO being somewhat over-zealous and agricultural in the application of Safety Management?
