Ah, Mick, you so under rate yourself.
NI mag has been a source of pond designs over the years, but too often skimming over the details and aiming so high most koikeeper wannabes would never go there. Maybe the answer is in having more detail in the pond construction articles in the more popular koi magazines... and vetting by the editor to assure the design is reasonably appropriate for koi. .... hint, hint, hint.
Then a liberal reprint policy, and ...