I recalling seeing an RAF poster some time ago listing the "Five golden rules" with regard to propellor safety. In typical RAF style they were:
1. Never walk through the arc of a propellor.
2. Never walk through the arc of a propellor.
3. Never walk through the arc of a propellor.
4. Never walk through the arc of a propellor.
5. Never walk through the arc of a propellor.
I think they made their point well.
PM