We got a steal on a 20 # CQR plow type anchor. Here in Maine we have all kinds of bottoms. We also have the old Danforth. Our boat is a 1982 25XT with a 225 Johnson. We would like to moore with it some nights along the coast. What is your idea of a really good anchor. We have rocks, gravel, mud, sand, and combinations galore. Thanks, Gary