FS,
I feel that stobes would be more of a safety hazard than help.
In industry stobes are used to test the frequency of rotating objects, motors etc. When the two are in sync the motor appears stationary etc, this is where the eye takes over and leaves the mind behind (similar to spatial disorientation etc.) we believe what our eyes see, despite our better judgement. In industry all to many fitters / engineers and countless more apprentices have fallen foul of this. It is what has given rise to the use of task lighting, as the flicker of flourescant tubes has tricked operatives into beliving rotating equipment is stationary.
I do take the point that the prop spinning and flashing strobe will give rise to several stationary shots of the prop, however when the two are in sync the prop will appear completly still and as in industry can have horrendous implications.
VF