I ARE TEH MASTAR!!
After waiting for guards to move, I made it back into the hideout. And there, where there was previously nothing, I found a flare gun! Rushed home to Skye, had a quick sleep, and in the morning we got into her life raft and pushed off from shore.
A passing boat’s attention was attracted by the firing of the flare gun, and we were rescued! THE END!
Finally! I was on Day 51 when I completed it, by the way. That’s probably more than twice the minimum, though.
Although I have now unlocked [spoiler] mode. Not sure I want to bother with that though, as the game irritated me too much in the later stages. Besides, I have 23984234 other DS games vying for my thumbs.