What are your primary goals; swimming and fishing? Just fishing?
A small pond for swimming and fishing I personally like very little artifical structure with lots of rocks and sand. Just fishing, maybe one or two sites to concentrate or protect smaller species.
No matter what, as stated in previous posts, beg, borrow, or steal, to get the best aeration system fitted to your pond size and location. In my experience, the hard way, without proper aeration the rest won't matter!
