When on long distance trips and are crossing 1 or more states, I hate GPS. I love my paper maps, will study routes and then make a sketch of the freeways & highways to be on and what exits to take. Sometimes use the internet before leaving for the leg of the trip and look up a video of the proposed road to see what it's like, if there might be construction or if there are sections of rough or twisting turns, etc. Then I stick the sketch on the dash or steering wheel and I am done.
DW loves her google maps and GPS (Tomtom for the truck). Google has put me on a few too many bad roads. I can't see the GPS screen very well as there isn't a good place to mount it and is too small, plus I were hearing aids and often can't hear the instructions due to road noise. DW gets p*ssed when I say I want nothing to do with either google maps or GPS, but then she can get lost on the way back home from work without her GPS.
DW has a factory touchscreen GPS in her Subaru and I do not like it at all. Would never use a phone GPS either. If I am going to be relying on one while pulling the trailer around, I want it running realtime 100 percent of the time and not cutting out for phone calls, emails or text messages and do not want to have to rely on cell towers. We have Verizon 4G and DW's phone and laptop but there are areas where Verizon is not available
When we're visiting an unfamiliar small town or large city, that's when I like GPS but even then it can make too many mistakes. Last year in Reno instead of telling us to make a right turn it said "make a left turn then make a U-turn". It was a good thing we didn't have the trailer behind us. I'm kinda thinking about getting a Garmin 760 but am on the fence.
On where to mount a GPS,
Ram Mounts and
Parker Mount have a bunch of various pieces so you can make up an articulating mount and I'm planning to get a few of them and a universal mount (so we can upgrade to a larger GPS if we decide to later on). With their components, I can make the GPS hang over and down in front of the dash where the radio is. Will cut a piece of 1/8" steel to sit in the tray on top of the dash to attach the round mounting plate to (1st pic).



