I don't have either, but wouldn't mind at all if I did have a GPS. I'm usually going to the same areas I have for years, so know them pretty well and what I'm going to do, where dirt roads go etc. There have been a couple times though out in the desert where it all looks the same and started to get nervous where to find my truck again... would have been handy, LOL.
I have both, I agree that something can go wrong with the electronic device, batteries always die when you don’t have any spares or are using the spares. You must keep up your skill with a map and compass and know how far you have traveled,, has your pace count changed over the last couple of years?
If you're lucky enough to be on private land and can leave your stand up during the off season you can tie an old piece of cloth or something of the sort to your stand. I like to use an old camo bandana that I have. That way the deer get used to the movement and eventually don't bother even looking up when there is slight movement. This may just give you the time to draw your bow or raise your gun without being detected.