In another guide I mentioned a tree located near Aquaberry. I wish I'd known about this tree sooner (or at least thought to take advantage of it more!). I haven't found any mention of this, but sit in the tree and toss stink bombs on people. There are a lot of NPCs, the cops can't reach you, and when you run out, the trouble meter drops fairly quickly and you can jump down. The downfall to this, however, is that you'll either have to travel to the comic book store to restock (for a fee), or travel back to school to restock.
Personally, I stayed in the boy's dorm room and lobbed as many as I could, that way I could restock quickly and rest or pass out and still be in the same area. Complete Chemistry Class to make stink bombs in your room.