Two tools I use for raking out deeper nasty stuff. The main tool is a 36" landscape rake from the blue or orange box store, but I would make sure the rake head bolts on. I chunked the handle that came on one of mine, and replaced it with a 10' galvanized fence post. That gives me reach. The other tool is a cheap leaf net for swimming pools. I use that for shoreline FA, and any weed fragments that may break off and reroot. Nothing about it is easy, but it works well.
