There was also a PB article on this. They are hard to maintain and harvest unless you have the right conditions. Plan on spending a few $$$ to install drainage pipe...and they resist going into that. I remember reading about fishing clubs letting their forage ponds go dry...too expensive and too much work.
With all that said, get a blocker net and use part of the pond you already have available, I put a small one out last weekend, it wasn't as easy as I tought it would be, but it was fun...wish it was a little bigger, live and learn.
