Im using 1920/1200, the ratio is 16/10 and also.
I made a
2km Bearing Plotter some months ago but it's metric.
If I remember right, it should be possible to make a 3k-yards version to fit normal filesize, no need for 20000gilos of RAM or Visva.
(2GB should be 'nuff), or DX10.
The download section should have the
3k-yard version, if not several.
Get one and resize it in paint-dot-net to fit your needs.
I don't need it ---> i'm not doing it.
It almost as easy as resizing a picture.