This is the ultimate for easy operation of a Hobie Mirage Sail Kit. Start with the sail rolled around the mast. When you are ready...un-furl to expose the sail or leasve a little rolled on the mast to test the wind! By partially unrolling the sail, you are "reefing" some of the sail for better control and stability. If you are ready for full power...roll it all out! Such a great addition to our VERY popular sail accessory. Fits all previously sold Hobie Mirage sial kit (Not for i-series kayaks due to their stayed rig). Heading back to the beach? Roll the sail tight up on the mast and beach or dock the kayak with ease. The rolled sail will fit in current full length sail bags. Hardware is easy to install and removal of the sail and control line is simple for storage.