You could plant the lilies in either end but you probably want room to swim in that end without bumping into too much. Like many ponders, I've never built a swimming pond but just fantasize about them. Our pool is 20 years old and literally falling apart but I could never convince my family to put in a swimming pond instead.
Here is the UK site on swimming ponds:
http://www.swimmingponds.info/I've always wanted ducks although they are good at making messes (who isn't?). I have five chickens two of whom were born here.
Your communication was fine!