>>877617>can't prevent flooding>blames it on the ground cover because he can't set it properlyYou keep saying it over and over again instead of posting why your tent floods so we can help you, so I'm assuming you're just trolling.
The only way a ground sheet can flood your tent is if it's larger than the tent itself and water drops run down the sheet and under the tent. This has nothing to do with ground sheets causing flooding, but the person who didn't set up their tent properly. I live in Michigan and it's almost always wet or a bunch of dew at night and my tents have never flooded.
If your ground sheet is larger than your tent for some reason, you need to roll it up under the tent. If that wasn't common sense for you, then you need some more experience being /out/.
