The past 3 or 4 years I have used a cam cleat with a dog leash for the anchor line. It has worked out great and I haven't had to replace the cleat yet.

I have anchors coming out both front and back. Larry is dead on about being careful in moving water. having an anchor stick in heavy current is a great way to die.

Here is my set up. You might have to scroll down to get to it...

http://www.derekspace.net/fishpic19.htm#anch