Yahoo uses NAVTECH street data in Africa, which is very accurate, whereas Google road data is waaaay out!
But then google satelite resolutions is 10x better than that of yahoo.
Can one laod the google satelite as an overlay, then the yahoo regular (make it 50% transparent) as an overlay on top of the goole layer?
Eventually there will be lots of layers, but the first 2 layers, either google or yahoo must be visible, or both.
Then my feature layers from sqlserver will be switchable on top.