Decision made!

Bass Pro Shops (and Cabelas), along with several other dealers have the Spot Gen4 satellite GPS messenger device on sale for $99.00

Link to Bass Pro Shop sale: https://www.basspro.com/shop/en/spot-gen4-satellite-gps-messenger?ds_e=MICROSOFT&ds_c=Shop%7CBPS%7CTopPerformers%7CBoating&gclsrc=ds
Service plans details: https://www.findmespot.com/en-au/products-services/service-plans#spot-gen4-plans

The SPOT® Gen4 Satellite GPS Messenger gives you a critical, life-saving line of communication when you travel beyond the boundaries of reliable cellular service. This SPOT messenger lets family, friends, and colleagues know you're OK—or, if the unexpected should happen, it sends your GPS location to emergency responders, all with the push of a button. Add this rugged, pocket-sized device to your essential gear and stay connected wherever you play or work. Custom messaging lets contacts know where you are by sending a preprogrammed message along with your GPS location. Automatically send and save your location and allow contacts to track your progress using cloud-based mapping. In an emergency, send an SOS with your GPS location to GEOS, facilitator of search of rescue.
Manufacturer model #: GEN4.

Lets you stay in messaging contact even far outside cell range.
Can send your GPS location emergency responders with the push of a button
Rugged build quality
Pocket-sized for easy portability
Automatically send and save your location and let contacts track your progress.