Thanks again
The problem I seem to be having is that nothing has a formal system to record usage.
e.g. booked G-ABCD 10:00 - 1200, no problem there,
but recording the Hobbs / Tacho and maybe take-off - landing or brakes off - on time are not addressed.
I'm looking at aircraftbooking.co.uk and trying to work out a way, perhaps using the message board system, to notify usage.
Anyway, Airchunck is next on the list to look at and someone has suggested "GoShared.com".
I see a lot of keyboard pounding in my future.
Many thanks for the advice and all pointers greatly appreciated.
A