Originally Posted by Bene505
......One question is "How big does the anchor sail need to be?" My thoughts are that it needs to be a bit bigger than you would think, but that's based on little or no information. It might pay to get an old storm jib and attach it to your backstay to see if it has enough affect.
It need not be very large.. the one we use down south is maybe 6 feet on the 'luff' and with a 4-5 foot LP - much smaller than any storm jib you're likely to have aboard.
This little riding sail nicely settled the B 36.7 down, but I imagine that sitting in 15-20+ knot trades requires a smaller sail than lighter conditions.
As an aside, you'll often notice ketches and yawls with their mizzens set at anchor - usually for the same reason. Of course, with the normal camber of the sail it tends to slat a bit which I'd find annoying, a properly flat riding sail doesn't have that tendency and is not working in the 'lee' of any mast at all.