Mainsail Trim

[mhinnc]

As you can see in the image, slugs hold the sail to the mast except for the first several feet above the boom. This results in a misshaped sail.


This image shows, at the bottom-most "typical" slug, the sail creases and that crease extends to the clew. Along the foot the sail droops over the boom several inches.


Below the bottom slug are two slugs with a line going through them. How would that typically be adjusted? The main halyard is pulled tight as it will go, yet the slack appears as shown. Thanks for any/all help.