I have nothing that that will allow examination of an exact point of the XML data - even its originating program won't do this, much to my frustration already :-/
I can roughly work out what time I was where, possibly even to the nearest minute, but I think it would be more accurate to use your third method. I'm fairly sure that in the absense of something like Garmin's [heavily copy-protected] MapSource software, Google Earth or possibly even just Google Maps (maps.google.co.uk) can provide if not the pinpoint lat/long for the dodgy points then at least close enough to be searchable (with better accuracy than a minute).
I shall return to this later. I am just off to take Asha to see some lovely Christmassy play or something... the Gruffalo's Child, I think. Wonderful stuff.
Cheers.
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