I have never manually set my hubs but I do run 4x4 high monthly between 0 and 35 MPH.
If it's not in the woods, I run it on a straight 1 mile side road after leaving work one evening.
Just don't make sharp turns on pavement.
If I can't remember if I used it in the woods, I do it anyways.

The ELD I'm not so good at remembering to engage.