I've done a lot of anchoring, for both bass and crappie fishing. I've anchored in rivers, reservoirs and lakes. The best overall anchor type I've ever used is a slip-ring fluke type. With this anchor, it will hold in most bottom content, with about a 3' length of heavy chain attached to the ring. It's very light weight for it's size and can be retrieved, most times, with proper use of the slip ring. Have never lost one yet.