I hate to admit it but....
I think Cooper's plan would've worked better. Granted going into the attic would have worked better than anything, or destroying the stair case, but between boarding up the windows or hiding in the basement, the basement would have worked. All that hammering drew all the zombies to them. If they stayed quiet and hid in the basement, there probably wouldn't of been any zombies. Plus when the gang of zombies finally do get into the house, they never do get down into the basement. I know they didnt know how long they'd be there but still...
Urknowldgof scientific biological transmogrification isonly outmatched byurzest4 kungfu treachery