AnchorWitch has been tested in the northern latitudes by John Harries and Phyllis Nickel aboard their Morgan´s Cloud. John says: "On balance, I would say that an AnchorWitch is a worhtwhile device to spend your hard earned cash on, particularly if you often anchor in places with a lot of man-made junk on the bottom. And that is high praise indeed coming from me, a person who is not big on gadgets and values simplicity, particularly around mission critical systems like the anchor, above all else." You can read it at this link.