Yes, it's OK to mount in a bean bag, which I find obscures the vision of the truck's front corners or I can mount it down around the cup holders which means I take my eyes off the road whenever I glance at it. How is this possibly a good idea ? Makes perfect sense to me.
I am a single and I full time. I need to see the thing. I do not just blindly follow the GPS vocal directions - that's a recipe for disaster. I haven't been in some of these states in 35 years - Every road is new - Every campground/resort is new.
I find that a high windshield mount obscures nothing except low flying Cessnas and is easy to see.
Tim