The areas where the pond got low and were exposed to cold weather are the only spots free of CLPW. The GC are already there and will prove to be too few, too many, or a reasonable number for what I want to happen. Anyway, to clarify, my question has more to do with the expected effects of such extreme variation of cover on the forage base. I already have 4 options to control CLPW: mechanical removal from isolated spots, GC, freezing of exposed pond bottom and chemicals should I choose to go that route in the future.