I agree that adding long lenghts of chain does help the Fortress set. But you still have the problem of a light anchor skipping over a hard bottom instead of penetrating. It also seems to me that the whole idea of the Fortress is light weight. If you add a couple of hundred feet of chain to it you''ve lost your advantage and you might as well use something else. The only advantage I see to the Fortress is as a kedging anchor. It''s light weight would be a help when hauling it out in the dinging to kedge off a shoal.