This could be a duh moment for me, but I'm thinking "fly" as in rain fly...
The rain fly on one tent gets folded & rolled only because it's got a plastic window that I don't think would respond well to stuffing.
As for the tents and the other rain fly, it's Stuff City!!!! And that goes for all my gear, especially my sleeping bag. Makes my mornings more manageable. Otherwise, it's like shoving toothpaste back in the tube.
The only problem with this is being an unpacking slacker. My gear can spend a week shoved into little balls before I get around to hanging/storing it properly.