Wow, I've never seen this from the "nervous parent/family" point of view.

I, after reading this, would absolutely not carry a spot for use in the tracking mode. The thought that every time I went off the trail to relieve myself, that calls to rangers would be made, would DRIVE ME CRAZY! (I know that is not what happened here, but you know what I'm saying).

I'm thinking that activating it at camp each night, leaving it on for a couple of hours, would be it.

Remembering that the Spot can give erroneous information, and over the length of this trail most certainly will do that, the associated anxiety will be manifest.

Wow.