This is one of the subjects that I often ponder on. As a low time PPL(H) I sympathise with Whirly, as I think that if I ever did pluck up the courage to do one solo, I would probably have the same reaction as she did. The various learned opinions on the subject that I have canvassed range from Never, through Not Allowed by the Insurance Co to Only with Special Authorisation.. .. .Funnily enough, I have no hesitation in stalling a plank wing, although I guess that I would think quite a bit before deliberately spinning it. Solo spins are far more common than solo autos, though the risk of entering those dark and forbidding areas of the envelope is probably similar.. .. .One day, I will ask for authorisation and be told to go ahead. Would I then have the courage to actually do it? Dunno.. .. .If you don't practise it, how do you know you can do it?