Naw. These things are brand new. With habitat day just a week or so in the past, my guess is that they are what Hotrod said: a lazy way of making some beds. The trash will collect, but I just can't imagine them holding up to very much abuse from the waves once they start holding that trash. It's gets pretty rough. I guess I'll find out, if it ever rains here that is.

They were definitely not there late Decemberish. I hunt that lake bottom, and they are new additions.