Hi I live in a rural community and by an open field. I am worried that a chicken tractor wouldn't be predator proof. I know there are skunks, mink, weasels, racoons and other animals in the area. Couldn't they get into the run at night or even the day? I would rather have a permanent coop and run but my husband doesn't want to run an electrical cord out to the coop in winter to heat up the water. During warm weather, I have a perfect location about 30 yards from the house. During winter we would keep it next to the garage and only have to run the electrical cord a short way. This would also offer more protection from the the winter winds. Two questions: 1- How safe for the chickens are tractors? 2- Has anyone figured out a way to keep water from freezing in sub-zero weather without running power from the house?