,
That bolded section is so very true. But here's the rub, most "clients" don't really know what they want. Most R&G installers either a) don't know the differences or b) don't explain the differences between a koi pond and a watergarden. The "a" option can be dealt with through eduction but that "b" option is what can be really upseting, especially in light of the fact that many of the R&G marketing literature depicts koi in an R&G pond. I am sure you saw the ADI pamphlet regarding the 20 or so "Myths" concerning ponds? A few years back, I diseted every one of ADI's points showing how totally wrong each of their points were and this is a company (as you know) that has had the facts explained to them time and time again over the years and yet they were still putting out this very misleading literature as "marketing". That leaves the impression with those who actually know better that its an intentional misrepresentation and the uniformed buyer is the victim. Although "Let the buyer beware" may be true, "intentional misrepresentation" is the foundation for many legal actions.
Here's a few questions for you to consider:
Do you survey prospective clients as to what their "wants" really are? Do they want fish? If so, what types and size and how many? Then, based on those questions do you know what the actual capabilities of the proposed pond really are and give the "clients" a dos and don't list? Such as the numbers of fish (types and size) that the pond is designed for? Do you spell out the required maintenance program and any associated costs?
Now, as for your own "koi" pond that you are planning, what depth? what structure? Have you gotten the plans certified by an engineer (I believe that is a California requirement by the way). As you progress, I would strongly recommend that you post your design and specifications for some review here. That could save you a lot of heartache later.
Steve