Thanks for the info Stan! I'm happy they're working for you. We've added some structure (pallets and pine trees) to our pond but i feel we need a lot more.
We don't really have anything in the way of natural structure, except for a couple of small areas with brush.
I'm going to put together a few that only use the bucket lid (may instead do a bucket with shallow concrete shallow, 1-2 inches), and will have short, 1-ft poly packed in tightly, sticking straight up
