Well, I was intending to watch TAC to begin with, because I thought he was town, and I didn't think he was still leading that much. So my plan was to watch TAC and see who would've finished him off during the night.
Then I wasn't too sure who to watch. I first thought Finalb since he kinda made himself a target, but I didn't really know who I wanted to pick.
So ultimately I picked Light because I had him towncored and I was dead certain he was my friend in this game, and also I love him, so I thought I might as well just watch over him in the worst case.
I doubted I would get FKd, at worst I'd be vigged after yesterday's shenanigans.
So TLDR, it was kinda random, but he was my strongest town read.