On Wed, 23 Jun 2010 11:30:01 -0700 (PDT), Frogwatch
wrote:

Another possibility using a rope is a Spanish Windlass where you use a
long loop between a cleat and the chain, A bar goes thru the loop and
is used to twist the loop like winding up a rubber band. You do not
get much length of pull but you can get a lot of leverage if you have
a long bar. As anchor comes up, cleat it off and repeat.

That works, especially the "repeat" part. Anything that yields a
significant mechanical advantage will do the job as long as you have a
good supply of "repeat" on board. :-)