I must not have been clear in my discription of events. The current in Deception pass was 6 knots but I was anchored in the mouth of a small bat [Cornet Bay] which is just inside the pass and it still had something more than 2 knots of current.In 6 knots current a kellet would be totally ineffective at preventing a keel wrap, even with heavy chain. ...
6 knots would be rather too spicy for my taste although I did anchor once in 2.75 nots of current as indicated by my "boat speed" on the hook. After a few hours, the current reversed and then the other way at 2.5knots. Love That oversized Mantus anchor.