I agree with arm out the window, the Advent of GPS, hasnt necessarily contrbuted to amount of fuel exhaustion accidents or incidents.
I can undestand, one getting blazay about continueing to a alternate destination, by just hiting NEAREST an GOTO DIRECT to get there on the GPS. But to use that feature only, (and I must admit before any GPS training I did the same), is really only using the equipment in limited form.
Most GPS have a fuel page, some even with fuel management pages these days integrated with Shadin Fuel Computers DATA INPUT and alike, make management easier. This knowledge as well as normal manual fuel planning shoud be adhered to in Flying Schools.Wether it IS or ISNT part of the syllabus, it should be included.
It seems inflight re-calculation needs to be looked at during training awell.
Regards
Sheep