Mosaic files are loosely based around Waypoints of interest i.e. a known waypoint or temporary waypoint. I keep a spreadsheet that references all waypoints covered by a mosaic file.
As described in other posts, I use the mosaics to draw custom paths showing reefs, ledges, rocks, artificial objects and well defined hardness transitions. This gives a detailed fishing map along with the RM generated contours.
I have 2 main workspaces I use. They both cover a large area and each has approx 19GB of mosaic files.
Any suggestions or solutions to help here would be welcome.