FNG
I read a writeup in some UK flying mag c. 1yr ago saying that AOPA were working on add-on modules for the PPL, and GPS nav was to be one of these. Crucially they said the pilot would get some sort useful piece of paper at the end. Heard no more about it.
Once I went on a 1 day Honeywell GPS ground school, and I was the only one who turned up! One needs to give people something tangible. But what? GPS usage is unregulated so why attend any course? It's a catch-22.
If every school plane had a nice big panel mounted (e.g. a KMD150, not the much more complicated GNSx30 etc) colour GPS but you had to attend 1 day's ground school to be allowed to use it, most people would go right away, I bet. Cost to properly fit one of these is c. £3000.
To many people, loading a flight plan into a moving map GPS, either directly or from a PC (the latter is not possible with most panel mounted units), is trivial and takes only minutes to learn. These people are unlikely to ever get lost, basically because it is damn difficult to do when you've got a preprogrammed track in front of you, with pictures of towns, roads, railways, and CAS depicted around it. But others seem to really struggle. How did they get through their PPL exams? Is it just those people who get lost despite having a GPS?
The people that do the most serious CAS busts get interviewed, and I am sure somebody has this data, and for some reason they aren't publicising it. My own belief is that those that get lost with a GPS are people who were using a non-moving map model and didn't understand it's rather obscure display (I know I wouldn't automatically). But what we get instead is a load of bunk (see CAA safety sense leaflet #25 for example) telling everybody about "terrain shielding" etc...
The whole matter of GPS has been very badly mishandled, I think.