Brettski,
My subsoil was heavy clay - I probably did not need such a large concrete base, but I have a heavy dock and we have had it loaded during parties. My neighbor was a Bobcat dealer so I got free use of a new toy with all attachments. The 24" auger attachment was tricky to use on the incline - I only drilled about 18" deep.
I will try to attach 3 pictures to this post,..
(img)http://img.photobucket.com/albums/v216/gainesjs/start_boat_dock.jpg(/img)
(img)http://img.photobucket.com/albums/v216/gainesjs/dock_almost_finished.jpg(/img)
(img)http://img.photobucket.com/albums/v216/gainesjs/Finally_Full.jpg(/img)
If the link does not work I think you can cut and paste the address but do not use (img) in the address.
