If you are going to have a wind mill or already have one perhaps you can learn from my experience. I have a 12 ft. windmill that I anchored with three ft. stakes a each corner that were driven in the ground. Also I screwed a mobile home anchor in the middle and attatched it with three cables. After one full year of standing it was blown over. The weatherman had warned of 90 mph gusts on the night of the mishap. Now my windmill is anchored in lots of concrete. You never no what kind of weather may come your way.
wayner