Anyone in WA using memory maps and could advise what the coverage is like. Seems like a lot of these systems are very Eastern state centric.
They used to have WA maps but they came from the WA government and as a result, had the same problem as any other WA maps, they were too old and not much use.
Their Austopo implementation is very good, and they also have Hema. You could also try free maps based on OSM. Generally, they are next to useless in remote areas but maybe better than nothing for WA.
You need to vote for a government that has an interest in mapping.