My dam has red azolla (azolla filiculoides) which is a native floating aquatic fern. I would like to harvest it to use it as a mulch and to add to compost. I imagine there are several tons of the stuff. The question is how to gather it. A net scoop would work around the edges but this sounds rather energetic to me, one could end up with a bad case of gorilla arms and get very wet. Other ideas are to use a net on floats and pull the net across the dam or to pump it through a mesh of some kind and allow the water to run back into the dam.
Google tells me that azolla is used in the way I want to but so far nothing about how to gather it.
Before I re-invent the wheel has anybody tried this or heard of it being done? By what method?
David