I was reading about the anchor , rope angle ect. We been having a big problem, we can/t seem to anchor in swift current. SUnday we wanted to anchor above the dikes on the missouri right where in goes into the miss and couldn/t do it. We kept being sucked right past the dike, finally gave up. He was using about a hundred lbs , 3 anchors tied together and a 50 lb weight. Well were new to the boat and dont know what were doing. . how big of a anchor should we use for swift current and how many?