LJ thank you for a very interesting reply re injuries.
My point, perhaps badly made at the outset is that if we must a bone dome in the Tutor can we have one designed/optmised for a GA aircraft?
I am flying the Tutor tomorrow and will have to don a helmet which was designed for use in a fast jet with an oxygen mask and I am expected to stick ear plug things in before bone dome to protect hearing. There appear to be better products out in the market place for this sort of work.