One of our QFIs on Bulldogs was an X Shack pilot. 2 tours I think. He always used to moan about how awful it was and how chums still flying them were desperate to get off. That didn't stop him however from saying to us light fingered UAS Cadets: ' If ever on your travels, you come across a Shackleton yoke, I will pay handsomely for it'. Alas we never did.