Nigel, surprised that with matelot`s `make do and mend` attitude,nobody made an `APU` out of a Honda50 moped and a `Hucks `starter attachment engaged,life would have been easier...
alternatively,engage clutch,fit tip -socks,and dance around the `maypole`....!
Anyway the WW Mk3 was easier,with a Cyclone and electric starter...