I have tried introducing eel grass and American pond weed to my pond and have not had any success as I can never get them anchored to stay in the bottom. I have tried several methods, wading in and planting, using the wrap around weights, and taking crayfish hole mud and making a ball around the roots to toss in the water. Does anyone know of a way to submerge the plants to the bottom with out going into the water ? I have all kinds of lilies which are thriving but not plants.