A feeding ring could keep the feed concentrated. They are recommended for preventing feed from blowing to shore when windy. A ring of 2 or 3 in black polypipe would work for one. Were you growing large quantities of CC ... another handy thing is that a lift net can be positioned under it for periodic harvesting (though it is more fun to fish for them).
We use rings to keep the feed contained due to windy conditions more often than not.
