I send "checking in" every time I drop into a new spot, and "at the truck heading home" when I finish for the day. There's no cell coverage most of the places where I fish, but the Garmin service sends these messages to my wife's cell phone and her email address.
I do
something similar with the GPS enabled Ham VHF radio in my SUV via the APRS worldwide internet gateways network. I have 6 lines of pre-written text stored to create 2-line messages; my wife's cellular text email address, "at dest" "-> upstream" or "->dwnstream", "headed home ETA _ _ _ _" (in 24 hour time), and "Love You!". The message includes the GPS coordinates with a link to an APRS Open Street Map showing my callsign on a "jeep" where the last transmission occurred. The route I took to get to a spot is also shown on the map because the radio sends a "beacon" status message every 5 minutes while driving. The link includes my Ham callsign so the link can be saved as a browser bookmark-favorite to use anytime. The APRS network is pretty active and I will hear messages being transmitted and displayed on the radio faceplate so I always know if I'm in range of a gateway. When it goes through I get a delivery notification within 30 seconds. I admit that I cannot carry the radio away from the car, so it is not as effective while I'm on trail-in the water as the satellite messaging devices, but unlimited use is free, I'm licensed for it, and it's better than no comms at all. I may get a sat device at some point. A better mobile APRS equipped radio that can "relay" from an APRS equipped handheld carried with me would also work
and allow fairly reliable direct station to station voice comms to other Hams for assistance up to 6 miles away, or with virtually unlimited range through repeaters located on many prominent points in the mountains. I was fishing a local stream one day and talked to a guy in Great Britain for a couple of minutes on my handheld!
Converting an azimuth, laying it out on paper and then going where it says to go... Wonder how many on this site can do that?!!

I've "navigated" groups off-trail using a paper topo map, compass, and
altimeter all hanging around my neck for a mile or more through old growth with no distant visual landmarks to find (i.e. the very end of) a trail, and even across the Emmons glacier for 2 miles in a whiteout to a key gulley-notch to get access to the NE ridge of Little Tahoma.
Being far enough back in the rear to direct the head of the group to stay on the bearing,
and steer around obstacles and back on the bearing helps a lot. The
altimeter also helped a lot to confirm the current position on the topo map along the way without distant landmark references.