How can I pin a location annotation for GPS coordinates on a processed map?

I have a map of a wooded parcel of land where I would like to place location tags at several known GPS coordinates. The only option I can find is to drop a pin and randomly move it around until the coordinates match. Is there an easier way to accomplish this? The simple solution would be for DD to allow the GPS coordinates to be editable under the Annotation & Measurement option (i.e. drop a location pin, then type over the coordinates with where I would actually like the pin to be).

Presently that feature is not available yet.
We are working towards it.

Still looking? Have you tried the new PNG overlay? You can also use Google Earth Pins and Polygons. If you have defined coordinates should you not be able to cross-reference and find them pretty quickly on another map? Two-tape using the Line annotation.