I have a permanent run for my chickens but I am sure as you all have experienced there is no grass left so I thought to make a chicken tractor. I want it to be cheap and simple and thought why not the PVC ones that I have seen. I am only going to allow them in there and hour or so hopefully a day but probably two or three days and then for longer on the weekends. Now, my question. I have ten chickens and am hoping to have about four to five more, at least that is the maximum, and I wanted to know how big this tractor needs to be since they won't be in there for long periods of time? Also, how do you get chicken netting to attach to the pvc? Thanks.