I was able to extend the pond out another 2' or so. I had calculated I would be able to, but wanted to get the liner in the hole before hand just to make sure.
I haven't filled all the void with smaller rock or foamed it yet. I was able to stand on this rock and it's probably the most unstable of the bunch. They aren't as stable as if they were mortared, but they are stable enough.
Here is a view of the rock work I got done today. I'm kind of on hold until Friday when my 2" flexible PVC line comes in that will go from the pump to the bog. Pump will be placed under the flagstone with the measuring tape on it. It will be raised up to right under that flagstone. I dug a 3" wide trench on the bottom of the pond. I will run the PVC line thru the bottom of the pond (covered with gravel) and up and out on the wall on the near side of the flagstone on the right hand side of this picture. I want to get the PVC line in and fill the pond up to the 2' level or so to push/stretch the liner out. I hate to rock the top side without filling the pond up some and the liner be in a bind.
I'm working on getting permission to collect my own coping rocks/boulders on a large ranch about 1 hour from here. It will save me a ton of money plus I love hand selecting the rocks that will be visible above the water line from amongst thousands and thousands.