I'd give some deep multiple-level play on words catchy title such as:
"Walking on Water: Engineering the perfect pond"
Or you could sell out and give it a quasi-racy title like:
"The Big Lake Erection Handbook"
which might sell a few extra copies, but then you would probably have to deal with a few disgruntled purchasers who might demand refunds...Or maybe not...The disgruntled buyers might be to embarrassed to complain.
