The last level is quite the challenge indeed. I myself, have gotten a stability around 0.9, and I definitely believe it's possible with further tweaking, though I haven't gotten to that yet... You can find a tiny preview of an attempt sent to me, with the setup it's built upon, in the game page description. It's definitely very finicky. However, the initial velocities aren't actually 0, they're, respectively: (1.0; 0.0), (-0.7, +0.7), (+0.7, -0.7). I'm so happy to hear that you enjoyed the game!