I'm hoping to get there before the body is motionless! :> Folks tend to get lost/incapacitated here pretty regularly. Take a tumble, fall down an embankment, twist an ankle, etc. Most of the year, water becomes a problem so you want to find folks in relatively short order to keep them from suffering from extreme/fatal dehydration. Wildlife (except snakes and insects) typically aren't a problem during daylight hours.
She hikes close enough to home (a few miles from here as the crow flies) so I can get there and, knowing which trail she took, expect to find her in relatively short order.
OTOH, if she opted to take a different trail -- or, start from a different trailhead -- it would be a "search and rescue" class of operation.
I have always used business cards as convenient bits of scrap paper. Especially handy by the bedside: you can find the edges of the card without turning the lights on and scribble a note "blind".
I've not been in a support role since my first job (back when dinosaurs walked the earth). I primarily do development, proof-of-concept prototypes, patent proofs, etc. So, it's almost always The Boss/Client who's looking to tickle my ear. As such, pushing them away from phone contact (where they want to shoot-the-sh*t and play "what-if" -- without thinking about all those "ifs" ahead of time!) is the big savings. Force them to put their thoughts and questions into words and most folks are too lazy or unstructured in their thinking to be able to do so.
Those who *do* formulate concrete questions have now undertaken the task of *documenting* their questions FOR ME! And, I can document the *exact* response to those questions -- not what they choose to selectively remember -- to remove much of the ambiguity and potential future misunderstanding.
An employer taught me that years before there was (practical) email: get it in writing!