I would (and have) break it into two parts:
i) make sure they cut all the way through on a corner to wing pass. This is because I want the baseline draft drive to be an “automatic”. If they come back, it clogs up the drive. That seems to be easy to understand. You can then get them to stop on the opposite block if you want for a pass, if you wanted.
ii) then re-introduce the back-screen.
Hope that helps