Just my 2¢ when it comes to strobes (I usually have at least 2 - a head lamp and a battery glow stick):
Write it into your plan/SOP. If your plan (that you left with a responsible party) says that you'll turn on a white strobe at sun down if you're overdue (no matter what the cause) then it makes it a lot easier for the folks who are looking for you to find you.
That is a very good plan.