For a long time I've had to take screenshots from google maps this always results in a smaller map image than i would like and has all the google map controls on it.
I recently came across this program Mobile Atlas Creator
it will allow you to download and patch together map tiles from a number of sources, not google maps (they did have it but removed it by request of google) but they do have OpenStreetMap and variants.
To have it produce output usable by The Dude just select the map output type as "PNG + Worldfile (PNG & PGW)"
Select the map source, select the area, and layer, then make the map. Done.
Hope this helps some people as it has helped me immensely.