I believe that they are for stern stability when heading down wind in a following sea. Time will tell ..... I haven't used them yet. I have heard that they could improve tracking when heading upwind as well. I hope that helps !
@@littlebeasailingadventures6408 thank you minimizing the zig zag when downwind will be a huge plus , and it's one of the main issues on our crossings , do you have any more videos making them ?
@@SailingNala unfortunately I don't have any more videos of the construction but there are some photos on my blog that you can see here sailorturks.wixsite.com/580build/post/rudder-construction
