I always try to tie a fender to the bow anchor line so others will know there
is
an anchor line there.

John H


"Hey, Joe! Lookit floating over there!"

"Well, I'll be damned if it isn't a fender! Those things are $30 apiece these
days down at the big box marine store. Whatta you say we motor over and grab
it?"

:-)

You might consider a buoy instead- something the average guy would associate
with a pot line or similar hazard.