I worry about that as well. My wife was suggesting something like concrete curbs holding back gravel. I think that will become a mess in very little time. Is there any proper way to make a swim beach in clay?
Cover the clay with old carpeting, and then put pea gravel or coarse sand over that. It won't sink into the clay that way, and manmade fiber carpeting won't rot since it will be protected from the sun by the sand or gravel.That's how I made pea gravel nesting sites for BG in my first pond.
