My feeling is this...if you want to find a pilot worth his salt...walk the pilot out to the ramp on a zero zero day....point him to the C172, with one com and and one nav, no gps, and tell him to fly over the hills, shoot that approach, buy some gas, come back....you'd be surprised how many guys won't do that...
Johns
With Zero Zero I dont think ANY will get back
Especially with one nav and one com one vacuum pump no anti/deice etc
Pace