I agree that maybe the owner of an airplane that was restored at great expense in man-hours and dollars(or pounds)should take a long and hard look at doing aerobatics in an airplane going on 60 or maybe more years old.Every time I’m at an airshow and someone is doing high G manuevers overhead in a bearcat or some other very rare airplane,I cant help but sweat just a little as I hope nothing tragic happens.Maybe I’m being paranoid but That the way I feel.