What makes life interesting is the situation where your organization has decided that GPS coordinates will be referenced to NAD83, but all the existing maps are NAD27. Ah, well, the conversion isn't that hard.

But I think this explains why some outfits prefer Lat Lon.

From personal experiences, when everyone is squared away and consistent, the systems work beautifully. I walked right up to some significant stuff recently, with absolutely no problem - and a difference of even five meters or so would have complicated matters.

AKSARR, thank you so much for giving me a way to keep you from finding (and presumably removing) our priceless artifacts. Gotta keep them pot hunters at bay!!