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The rig on the left is the original from a 9'x12' tarp. The
one on the right was for the Duckworks
contest, which had to be pieced from an 8'x10' tarp.
The
polytarp lugsail is effective and easily made. It has an upper spar or
“yard” 10 feet long and a 10 foot sprit boom, rigged with a “snotter.”
(Piece of rigging attaching it to the mast and allowing you to vary the tension
on the sail...see rigging diagram on details page.)
Here are details for making the sail.
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