A few minutes with a waterproof marker can save a lot of time when you are changing sails on a dark and stormy night. For hanked-on sails, I draw an arrow pointing up at each hank. For boats with furling sails or boats equipped with racing luff extrusions such as Tuff Luff, I mark the luff tape on the sail with an arrow at about 2-foot intervals. Write Head, Tack, and Clew on each sail in the appropriate corner. On the head and tack, identify the sail itself – like 130 percent Yankee.
To read more tips to keep your sailing safer and more enjoyable, purchase Offshore Sailing: 200 Essential Passagemaking Tips from Practical Sailor.