Wait, the clips kept popping off every time you moved? That is wild for something that costs $45. My brain cannot even process paying that much for a fort kit that falls apart the second you shift your weight. A bedsheet and chip clips have been working for people since forever, so I don't get how a company messes that up. You are not doing it wrong at all, the fancy kit is just overpriced junk with a nice label on it.

or it gets tossed the next morning" is harsh but I heard Berlin hostels do the same thing.

Chalk line before rolls? We always marked the plate instead.