Question about tent footprint sizing

I keep seeing people buy footprints that match the exact floor dimensions of their tent, but after a rainy weekend in the Adirondacks, I'm convinced you need one that's a few inches smaller all around to stop water from channeling underneath. Anyone have a hard rule they follow?

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1 Comment

simonk981h ago

Buying a footprint the same size is just building a water slide for your sleeping bag.