There's always something like Garmin's Basecamp, although haven't been that impressed with it and not sure of map availabilty for things like MVUMs, etc.

Another option would be to run an Android emulator on it (Bluestacks), then you would have access to Backcountry Navigator, Gaia, etc. May need some tweaking, it really likes the PC to have virtualization capabilities. As I have only run it on a static PC without a GPS and fulltime internet connection, I don't know how it works out with using a PC and it's resources (i.e. external GPS puck) or storing offline maps. BlueStacks is free so it wouldn't cost much to experiment

Check out Ram Mounts for mounting it. They have a very wide array of options to fit every vehicles and mounting scenario.

Unfortunately, I'm not familiar with what software you can run on a Surface so I'm no help there.

There was a thread on this topic on the old forum that didn't make it over to here.

I use an iPad, RAM mount and variety of software. Lately I've been using Gaia (Premium). The premium version has some really good maps. In particular all of the NatGeo trail maps. Once you download your area for offline use, it's pretty slick. You can get a discount code for Gaia Premium here: https://www.gaiagps.com/lifestyleoverland/

David,

There some discussions out there. Check this one.

https://www.northwestoverland.com/forum/gear-binge-worthy-stuff/navigation-electronics-what-do-you-recomend-and-use

My gut says that the windows ecosystem of hardware (external GPS') and software is not going to be as good as Android. Nothing empirical. You'll have to share what you find.

The main things are offline maps, good way to charge the device, and a mount that meets your level of ruggedness.

I use an android tablet, backcountry navigator app, and a magnetic mount. The tablet is a permanent part of the truck because I also use it for engine monitoring with OBDII, music, etc.

Others here like a more rugged mount and use different software (Gaia).