Possible Clues:

• Changed course
• Turned into the wind, as sailors do
• Added (on)
• Added, with ''on''
• Sewed with temporary stitches
• Changed, of course, and nailed it down
• Sewed with loose temporary stitches
• Sailed a zig-zag course
• Sailed into the wind
• Sailed zigzag course to take advantage of wind