I don't know about anyone else but all I do is put the Hex ID of my PLB into Field 18 on the FPL and that's it.
If for some reason I need it, I will pull the cord, wait for the rescue and explain later.
Beyond that I passed worrying about the fine grain of the wording some time ago.
Oh and before those who go off on the legendary insurance tangent, my insurance company says it makes no difference to them at all.