GPS is nice, but nothing beats a good old fashioned paper map. My dad gave me several older maps that were done before the US Interstate System existed, and a couple while it was being built. Some of those roads are not on the newer maps.
When it comes to knowing when to GTFO, it helps to stay one step ahead of the game. Most wait until they are told to go. If you pay attention, you will know when it’s about to get deep.
Never challenge a man who has nothing left to lose.