OK, got it, I think, as far as changing my avatar ... we shall see!
Here are a couple pictures of my progress from this evening after work.
This first picture is taken from above, at the farthest end of the pond. I'm dealing with pretty large roots in the middle, so switched ends, and came upon some more big roots, darn it! This end is dug down to right at 3' at the deepest part where the shovel is, and with the 2 blocks that will be on the outer edge, I'm pretty much where I want to be depth wise on this end.
This next picture shows the limestone "shelf" that you see in the first picture on the lower right. I'm thinking that this chunk is going to get to stay put, since this would make the shelf (the only shelf I'm planning on for this pond) about 26" down.
The root has to go, I know, but again, I need an ax.
I want to have some lilys on this pond, but want it to be more "heron safe", so this end with the shelf can have a short fence and fishing line across the top if necessary, to keep any possibly herons from wading in on the shelf. The rest of the pond will be about 3.5-4' deep.