One thing I noticed that might be helpful is when a stick is forced into a leak that is under the water line, and the stick is substantially thicker than hole, it makes air bubbles come up from other leaks that are connected in a seam. Maybe this could be experimented with, and improved on, like figuring out a way to force pressurized air into a known leak to see if bubbles come up elsewhere, as this can reveal if there is other inlets into a leaking seam.
My pond gained another inch since yesterday and is 2 inches from being full and beginning to trickle out the outlet pipe.
