I think that a blinking light in the middle of nowhere is going to cause comment. And be investigated.
Any one with any sense has told a responsable person that they are going to.......... via .................and expect to be there by.......... They will phone/radio the R.P. when they arrive. If they don't phone/radio by ........... please contact the emergency services.

L.E.D. headlamps are much more robust than strobe light's, which are somewhat vunerable to sharp impacts breaking the flash tube.
It might be worthwhile to have a write in to manufacture's asking for a S.O.S. or 3 flashes, pause, 3 flashes setting. Reviewers might want to pass specific comment. Which would make manufacturers take notice.