Mine were not in use, they were thrown into the console of the truck and then used of site surveys and if I was hiking or whatever. If on some kind of vehicle mount, the is probably isolation enough.

Thanks for the answer Izzy.

Some of our uses are the same. I used to use the waypoints quite a bit to record discovered locations and features that were not on the maps, and then write them down in my notes and on the map itself.
I also used it for setting destinations from a map with a chain of waypoints to get there.

The most useful thing to me is still the ability to get an accurate position fix when I need it.

I try not to start relying on them too much because electronics always seem to fritz out on me just when they are needed the most.

Precisely, I was on a boat one time that the LORAN failed (yup, that long ago) and found out that nobody was really quite sure of where we were, had no charts and had no bearing compass.

That was my thought too, there is an empty spot in my instrument cluster I thought I'd mount one