Thanks all.
I thought I'd read something about having to enter and use a route (rather than goto) from 1/Jan but maybe I dreamt it. I'll ask the tame IRE when I bump into him and post here if I find anything of interest.
Cobalt: Excellent! it sounds like you were less stressed and a lot more "chilled" than I was on my initial.
Switching-off a 430 means that you're down to one nav/com so that would increase the workload a bit - slightly harsh of an IRE. It would be better to change the GPS zoom so that the graphical display is useless.
MJ: that's a bit devious! easier to pull the data card
HFD