With all the rain I stopped trying to treat the small pools as the chemicals were getting washed away. In the lake FA isn't currently a problem but the various weeds are. When the weather returns to normal I will start treating them.

FWIW, one of the cattle pools was 80% covered over in weeds before the storms. After the flood waters engulfed and flushed it the weeds are only 40% coverage. Still not great but better than it was. Will take less chemicals to treat.