FFly,. .. .If you fly a Bulldog, then you probably have the urge to conduct the odd round of gentle aeros, swallow your pride, forget the image and protect your head, GET a bonedome, and wear a parachute.. .. .So many times you read in AAIB reports, that the crew would probably have survived if they were wearing a "bonedome".. .. .This is however my personal opinion, having lost 7 close aerobatting pals in accidents.