The highest mountain summit in Florida is 105 meters above sea level.

In Florida a) they don't take kindly to that kind of units and b) you should be more worried about the many 1500-2000' antennas than the "mountains".

It's still pretty useful to know where you are and not die hitting an invisible guy wire.

Did you misspell hill? It’s not like some sand mountain jets up 300 feet all of the sudden.

Right. I said mountain to stress the importance of topography in the NM accident. The parent commenter may pat himself on the back for never flying into terrain during GPS outages in Florida, but there are factors in play in addition to his superior skills.

And even that is basically Alabama.