I have read this entire forum 3 time from front to back in the last 2 days. Thanks to you all. The pics and previously asked questions have supplied me with volumes of info. After a weeks worth of research (BYC being my final and most important research place) I have finally decided on a coop design. I plan on cheap vinyl on the floor but - read somewhere about a tarp on the floor held in place by cup holders screwed into the side of the wall. Has anyone done this? How did it work out? I have not had chickens in 20 years and am so excited.