What do you think of this idea. Dig hole 2'3" deep. In the hole goes:
3" gravel
4x4 wood post, sitting on 3" of gravel, bottom of post is 2' deep.
6" gravel
6" concrete
6" gravel
6" concrete
The only difference from a standard post in concrete is that instead of dumping a few inches of gravel and filling hole with concrete, you have a layer of concrete, a layer of gravel, and a top layer of concrete. I'm not sure what this accomplishes, unless gravel is cheaper then concrete and you save a few bucks. I haven't priced gravel or concrete yet. I want gravel for drainage, keeps wet dirt away from post.