RSS Kombi Sail/Paddle Canoe Lug Sail
Kombi Sailing Canoe Lugsail - 54sf (5sqm) Lug - also fits Welford Sherpa and likely suitable for many other small-boat deisgns.
Komibi as designed for long distance raids, so the sail comes standard with 2 rows of reef points.
For Kombi plans click HERE
This link will take you to the page to download a guide to size sails and spars for a non storer boat.