It sounds like me, though I'm not fishing and I don't mind the
swinging...

"Once you've found biting fish, you may want to anchor the canoe in
position. When anchoring a canoe use two anchors to minimize the boat
from swinging (unless you intentionally want to do so to fish a wider
area). To properly anchor a canoe, put one off the bow and the other
directly off the stern. Do not tie anchors off the sides of a canoe as
this can lead the canoe turning over in heavy waves. Mushroom or river
anchors between eight- to 15-pounds coupled with nylon rope will work
for most canoes. When tying off anchors use quick-release knots so
slack line can be let out in the event of unexpected waves surprising
you to ensure the canoe doesn't become swamped."

http://www.basspro.com/servlet/catal...objectID=30095

So one on the bow with short chain should do. Preferably Danforth.