This is a view of my mast(I know I'm not much of a graphist). I would like to know what do you have to block the extended slot on the right side. When I lower the sail the sail slugs fall out making the sail fall loose in the cockpit and forcing me to climb on the cabin top to reengage them to raise the sail again. It is not a problem when I'm not sailing by myself but when I'm alone I would rather just pull the halyard to raise the main sail.