OutdoorsTried-and-true tip
Wool telltales on the luff show airflow
Wool telltales on the luff show you whether air is flowing smoothly over your sail.
- Time
- ⏱ 5 min
- Difficulty
- ◆ easy
What you need
- Wool telltales
How to do it
- Attach the wool telltales to the front edge of the sail (the luff), roughly at its deepest point.
- Watch them while sailing upwind.
- Trim the sail so the telltales stream backwards.
Variations
- Ribbons on the leech and on the shrouds also work, as they are lighter.
Sources
This is where we found the tip. The badge above shows how well it is backed up.
- en.wikipedia.org (opens in a new tab)
Draft telltales tend to be made from wool.





