The heavy plastic coated chain link placed
between your anchor and anchor line will
really save your boat in the long run as
well. Fisherman's has a video on how to
safely anchor in the Columbia and I think
the Coast Guard does as well. Sturgeon
Leader make a great "safety trip" material,
but don't use too much. Holds much better
than tie wraps or other materials, yet
won't keep tripping on you in heavy current.