Thanks Bill. I am in north central Indiana (zone 5b), the coldest it gets most winters is probably -15 to -20 degrees a few nights. Fishing would be the primary goal of this pond. Hunting would be a secondary goal, I was thinking to build the northern edge of the pond with a thicker shallower edge to try to get some duck interest (as the only safe way to shoot is to the north so that's where I'd want the ducks to be).