The undertow/current there is incredibly swift. So you should be incredibly cautious approaching it. The wind will surely shift to directly away(towards the edge) and the current increases as you are drawn closer, like in a whirlpool. Even in a longboat using Moder power, you CANNOT escape. Do not go there unless you intend to lose that toon and gear. Irrevocably. If you simply must do it, use a trash toon and a raft. It is known-ish. I have clips.
I've seen that oddness myself, I don't think they tried to harvest from it.