Harken Single Line Reefing Kits let you shorten
the mainsail in three easy steps: ease the
halyard to a predetermined mark, tension
the reef line, and trim the sail. Sails with
reef points do not need modifying.
Harken Lazy Jacks Kits contain mainsails while reefing
and dousing. They work extremely well
with full-batten mains, but can also be
used with conventional sails.