| This will flatten the upper two thirds of the mainsail and depower the sail. |
| These lessons proved to be vital, as we had to reef the mainsail and change headsails later that evening under difficult conditions. |
| With smooth proficiency, the trimmers backed the jib, and the mainsail was eased, swinging the bow around. |
| A gust of wind hit them as the mizzensail was unfurled, followed by the mainsail and the foresail. |
| Careful control of the boom and mainsail is required when jibing in order to prevent a violent motion of the boom when it switches sides. |
| I used the concept of the sailing boat rig with foresail and mainsail in the 70's as a very slow flying hang glider. |
