and the great thing about GPS/RNAV is that it can be used for all flight, VFR and IFR, whereas the map reading method works only if
- VMC, and
- not much haze, and
- you fly over a feature-rich landscape
- you have chosen clear unambiguous waypoints, and
- your stopwatch is always wound up and restarted correctly, and
- you don't deviate from the planned route (things get a lot more involved if you do)
etc...
In 9 years and 1100+hrs I have never been lost or even uncertain of position, for a moment. Something must be working, because despite living in the countryside I still cannot tell one sheep down below from the next one
