Personally I don't enjoy playing these kinds of levels too much, but I seem to be in the minority there. Mercifully, after finding the exit, the optimization came quickly. I think labelling the blocks and holes in Paint helped with that.
This level is like a cold swimming pool. Frustrating at first, but fun once you get used to it. The fun didn't last long since I resolved the 2-off quickly, but at least it started after I found a huge cut.
Edit: This is now my new 100th professor - due to frequent difficulty rank changes.
What a level! At first I was light years away, then I came 10 off, kept searching, found a 2 off and in a few more tries got 242. When I first saw it, I felt very lost, Didn't know how to begin and what to do. It was just too much information to plan everything ahead. And in cases like this, I just start trying. :)) After the first few tries I didn't expect I'd solve it the same day. :)
GREAT level!
Figured out how to finish it with some planning, but as usual, figuring out the optimization is always difficult...
Edit: Finished, had the wrong order before. Good, but I am just thinking if there are any shorter routes :)