I managed to beat the record of compactness. The first Compaction was around 48 wide and 36 high, and Compaction_v2 is 44 wide and 34 high if my calculations are correct. By the way, you can see that I used the speed-curve glitch to gain some more space, and the stock of Ultimion is at the very right of the Compaction_v2 in the small loop!