Greetings all! My pond design is still "in research" and evolving due to several very expensive conditions: 1) must dig all the way to 10' to hit the clay bed 2) cost of moving betonite to the site is over $8000. Is it possible to line just the pond sides and intersect with the clay bed in some manner? I cannot find this question elsewhere on the PB site or any of the books, so hope it is not an option too "far out there"... but had to ask if it is ever done.