Our club is doing an anchoring class this weekend; so I was searching for some
used anchors locally "just in case" someone needed one.

I stumbled on http://www.slideanchor.com/box.asp -- is that for real?
no chain & 2:1 scope?

Has anyone actually used one of these? I was intregued by the clams, but
couldn't find any reviews online -- just marketing stuffs.