got it to open I just have to save the file to my computer first instead of terying to open it from the web, doh!!! check this out for further explanation of balancing a sail boat correctly. http://www.schoolofsailing.net/weath...-lee-helm.html
a brief explanation of centre of lateral resistance, imagine the boat is sitting on a trailer and the area of the hull normally submerged when the boat is in the water is painted a different colour. now walk a long way from the boat directly out to the side of the boat and look back at the boat. what you will see is like a side elevation of the boat. in freeship this is called a profile view. now look at the area of that view that is under the water and calculate the centre of that area and that will be near enough to your centre of lateral resistance or CLR. copied this info from an eric sponberg post on this site
"There are two methods to calculate the center of lateral plane: In Autocad, and with scissors, paper, pencil, and a triangle scale (what could be referred to as the kindergarten method)
AutoCad: Assuming your profile is in AutoCad, a 2-D drawing, using a polyline, trace around the entire underwater profile area. With the REGION command, declare the polyline a REGION (Type REGION on the command line, and select the tracing polyline as the region). Set the Origin of the drawing at some convenient point on the drawing, such as the front end of the waterline (TOOLS-NEW UCS-ORIGIN). Then on the command line, use the MASSPROP command to determine the mass properties of the region (MASSPROP, select the region you just created) and a window will pop up with the mass properties of the region. Included in those properties will be the centroid coordinates of the center of area (or mass) from the origin. Using those coordinates, you can put a point or a set of cross hairs at the centroid location.
Kindergarten method. Print out to scale a copy of the underwater profile on a piece of paper, and glue it to a piece of cardboard such as the back of a tablet of paper. Cut out the paper and cardboard outline of the underwater profile with a pair of scissors. Bend the profile slightly with a smooth curve from one end to the other so that it is not perfectly flat. Place a triangle square on a flat table, and balance the cutout on the triangle square so that the bow extends one side, and the stern extends the other side. Balance it perfectly, and with a pencil, mark the upper edge and lower edge where the top edge of the triangle is. You should have two little pencil marks on the cutout--connect them with a straight pencil line using a straight edge (the triangle scale, for example). Now you have a line of position, just like in celestial navigation, going somewhere through the center of gravity (area) of the cutout. You need at least one and preferrably two more lines of position. Rotate the cutout about 45 degrees one way, then 45 degrees the other way, and repeat the balancing and marking process, and drawing lines between the hash marks. You should now have 3 lines of position that all cross at the same point. If you have done a poor job of balancing, you will have a little triangle drawn by your 3 lines and you'll have to do it over again until the lines all cross perfectly at a single point. This crossing point is the center of area. You can measure the coordinates to the waterline and the forward end of the waterline.
I hope that helps."
eric is a naval architect and this was his post on this forum at center of lateral resistance
I am not sure but it looks like the centre of the lateral area below the waterline is marked in the profile view in your drawing near the lcf dipl etc