My suggestion is implement a web live track when the multitrack is activated.
This is something which exists at others sports tracks like strava, ridewithgps, mapmytrail , wikiloc.
The WikiLOC is who I consider the best example, because is very low expensive and works very well.
If Orux implement a resource like that , low expensive like wikiLOC , I'm will glad to pay for it...
To be objective , the resource is :
* add a option at multitrack where it will share the position with a web version.
* add a option to able share the link of this web version at facebook, whatsapp, twitter ...
this way we can share to our friends and parents that not have orux, keep eye where we is when get into a trail.
I believe the data traffic of multitrack already pass by orux servers... so "just" need create a interface to show it and enable only for users which pay the "donate" version (then should be named to a PRO version...)