My vote would be for keeping the beach out of the cove.
There's a public access area near the house on the lake. It's silted over in the early spring, but the people swimming in it stir it up enough to wash any silt away. It's about 2' deeper than the surrounding water depth as well, probably due to no siltation. It wasn't a beach to start, but over the years it's turned into one, sandy bottom and all. No sand was transported in, but there is a lot of sand in the surrounding soil.
