I've designed an 8x16 coop to build in my backyard. I'm not sure about what to set it on. We are in Vermont and the coop location is slightly sloped, fairly well-drained and under/nearby some maples. I've read a lot about people digging below the frost line and pouring concrete piers or purchasing concrete blocks for the purpose. This seems like overkill to me for such a small structure, particularly if one is trying to economize. My question is, can't I just put down a little gravel and some large stones on the corners and mid-points? Rocks I got and lots of 'em, plus I'm cheap. Does anyone see any problems with just resting PT 2x8's on stones, assuming they are flat enough and I can get them level enough? Thank you in advance for your comments and suggestions.