Thanks for the comments & ideas guys. 
Adjusting the display to the actual Draw size is probably possible but a nasty bit of coding because the length varies with the window width. However, I have a version working with the cursor displayed (and hold down hotkey action), though it’s not as smooth as I would like. I will post it when I’ve tested it a bit more.
small_orange_diamond
I’ve uploaded the old version for you.

