This is a reasonable way of dealing with it. I've just created the dock folder and now it's a lot easier to get to (except that I have dock as minimal as possible, so it's still a little fiddly). It does feel like just hitting ctrl-c in annotations should copy to clipboard.

I know pretty much every other combination of screenshot shortcut mentioned here, but this workflow has irked me ever since they added the annotation tools. I can work with this, thanks!