This thread is amazing. I just floated an 18' cedar log in my pond and anchored it in place most days we have 5-10 turtles on it. Before I anchored it, the wind would blow it around and the turtles on it would all go sightseeing like they had their own cruise ship.
You could still do that, just make the log tethered on one rope, and have the rope a lot longer than the pond depth. That way the log can go it's merry way, but not end up on shore.
