Put 12 of these in my 1-1/4 acre pond. All of them are 6' in diameter. There is a feature in the hub to tie a small rope to it and the other end to a brick. This works very well.

Made two really nice sized 'reefs' out of them in the deep area by dropping 3 of them in a row side-by-side. Rest of them are scattered around in strategic fishing areas. Seem to hold Crappies well.

My Son snagged one while cat fishing and brought it into shore, so I relocated it in a shallow cove. Visually you can see it doing its job by attracting little guys of all sorts. The proof of success is in the pudding as we catch numerous predators between it and the shoreline.

Buckeyedude