Nice day at zonnemaire. Although I couldn't get speed in the set today. Al the time I had the feeling that there wasn't enough wind. First with the 124 but  changed it to the 105 when the wind was picking up. By the time I figuered out wat was wrong it was to late. The key was in the outhoul setting, with another boom it didn't work with the old settings. After changing fins, moving mast, Boom higer/lower the last thing that crossed my mind was setting the sail thicker. If I did it earlier....