Well, this one came out of the past! Even though this is an old post, let me just address this part:
I'm a rocky bottom girl and I'm here to say it's perfectly OK to rock your pond! It's not "a maintenance nightmare" at all. In fact, if you believe in the eco-system pond, you understand that those rocks all help with maintenance of your pond. I'm a bit of a broken record on this subject, only because I know when we were researching our pond, I would read all these forum threads (even the really old ones) and collect ideas and opinions. I would hate for someone to read "it's the general consensus" and leave it at that. This is one area that's more preference than anything and depends a lot on what kind of pond you desire.
That's all! Off my soapbox! (Or my pile of rocks, if you prefer!)