Both the main halyard and jib halyard on my Stratos are not guaranteed to lock into their cleats so will come out unless I tie the halyard ends around the mast. The Halyards were replaced in 2009 / 10 and as the boat is only used recreationally about 7 or 8 times a year they are still in good condition. I replaced the jib halyard previously with no improvement. Is there a good solution to solve this problem?
This is not usually a problem, as long as there is a good tension the ropes should lock into the cleats. However the Cleats on the mast can become worn and may need replacing.
Ivan, if the rope is slipping through the cleat, it can only be the diameter of the rope, or the effectiveness of the cleats. I cant think of any other factors that will cause the halyard(s) to slip.