Took me a few days to find the time to play again, but... you have fixed most of what I reported! Can confirm the boat works as intended! I HAVE DISCOVERED THE SECRET OF THE LAKE :D

But, I started a new game so I wouldn't have whatever broken shit possibly hanging around in my save, and I managed to pick up a different quest, that I missed the first time! ... that is now also stuck on the night of Day 7. So, here's what I picked up on this playthrough:

• It's possible to pick up quest journal entries without actually having a conversation about the quest. Like the one with Kaylie's romance. I talked to Tina about the town, and 'About her problem' disappeared from the dialogue options and the quest appeared in my journal. I had to wait until the next day to ask about her problem and then get the actual quest-starting discussion, so that Kaylie would move into her outdoor position.
• I have apparently fantastically screwed up Steve's parts quest. 
  • He tells us to go to Manufacturing, in the Factory, to pick up the parts he needs. By the time I got the quest, I'd already looted all the boxes in Manufacturing and used the stuff. So I figure that means it'll spawn what he's looking for, somewhere in Manufacturing. 
  • Legit could not figure out what he's looking for, as nothing I'd gotten from fighting rats incremented the counter and all the boxes were still empty. 
  • Reloaded an earlier save, so I could get the quest before looting the boxes... still nothing increments the counter. I've picked up: Magi-Tech Components A, B, C; Potions; Ancient Blood; and the Magi-Tool 3000. Interestingly, don't see 'Ancient Blood' in inventory. Is that a variable, rather than an item?
  • Checked all the bookcases in the top room, the panels in the top room, the trash bin, the grey spots on the floor (are those holes? I was surprised they were walkable), the trash piles, every box in the room, the book blocking the path to the bookcase by the desk, fought all the rats that have wandering sprites, and a bunch of the rats that didn't, until I ran out of magic. No luck. Did not check behind the desk because there's no path there.
  • Tried going back to Steve with everything I found in Manufacturing still in my inventory, just in case it was just a quest journal problem. No luck.
  • Can't go to sleep on Day 7, until this quest is completed (as once again, this is the only quest I haven't finished, so it's gotta be this one). Did I miss something obvious, or is this actually broken?
• Picking up the magitech components from the boxes in Manufacturing spawns filler text.
• (filler- you have 10+ scales so he's sending you to Margaret) remains when talking to the Old Fisherman
  
• There's a lot of dialogue that's missing spaces after a word or two, if it's more than one line long. I'm guessing that's a re-wrapping long lines problem.

Sorry I keep breaking your game! *laughs*

Also, having gotten the Kaylie/Tina romance quest, the 'I'M IN LESBIANS WITH YOU' line is amazing, and I shared it with my friends, who also thought it was pretty great. I'm gonna rec this game once I'm actually able to finish it, I swear.