"BenignVanilla" m wrote in message ...

We're putting a lot of effort into a natural look, so we're doing our best
to avoid a visible liner. I want to try and get the water right up to the
edge if possible.

Problem with that idea is that normal evaporation can lower the water
level enough in one day to make the pond liner visible. Complete
invisibility is very difficult to achieve. You could use a large rock
overhang (not generally a good idea) or hanging plants around the edge
to hide most of the liner.