I want to separate analog and digital parts of my PCB, so I am using copper fill blockers, but it’s really tedious.
It would be nice to have a tool allowing one to draw a thin copper fill blocker the same way the wires are drawn in the PCB view.
Please see attached picture to understand the issue.
Can you make a line between 2 via’s? Then maybe minus the via’s after getting the line is where you want it?? I know a crude workaround. But it should work. I’m sure more UI options will come as the program progresses, we are still working out issues, as Fritzing is still in Beta. 
Thanks for the trick. The only drawback arises when the line’s ends are too close to a connector: they get connected.
Sometimes, I can spend endless hours routing wires… Maybe you just need to rearrange some wires and placements. I’m sure you’ll get it. Best of luck, have a great day!!!