Found an article on what can happen when you use too much of an anchor while kayaking. The author got lucky in that a motorboater saw his plight and helped him out of a very bad situation. Good lessons to be learned for kayakers of all expierence levels. The article is located on the Texas Kayak Fisherman site in the articles section under fishing . The title is "Hooked."
http://www.texaskayakfisherman.com/articles/hooked.php