The difficulty retrieving a danforth-style anchor (fortress/guardian), or one of the new deep-setting anchors should be a consideration when sizing your windlass. I see A LOT of undersized windlasses on boats, most of them OEM. Many times my 66# Manson Supreme can be a bear to pull out of the bottom, but if I get over top of it my Lewmar H3 and its 1-ton pull can lever the shank vertical and extract the anchor. I have seen it buried up to the shackle-eye. Love that anchor, love that windlass