GLIDING UK
It was relatively standard to have a turn and slip in UK gliders.
Cloud climbs not uncommon with a specific frequency to avoid collisions.
Climbed in cloud triggered by a coal fired power station with 5 others in an divergently unstable glider..not a problem bar the mental stress.
The video appears to illustrate what happens with wave flying whether the system is set up from terrain or wind shear.
Unfortunately the behaviour of the atmosphere isn’t predictable which caught these guys out...reminded me of what happened to the AirFrance guys penetrating the ITCZ.
Like many I have been caught out but remember gliding records are incredible..endurance 57 hours, altitude 60,000? and distance over 3,000 km. It’s what happens as do the accidents flying in the french alps.