Things You'll Need
Instructions
Measure a 4-inch-by-6-inch rectangle in the foam. Mark the measurements. Use a ruler to make straight lines on the foam, outlining the rectangle.
Cut the foam with a serrated knife. Scissors are difficult to control in the thick foam and leave a ragged edge
Insert the knife in the center of the foam rectangle. Cut a small hole for the mast.
Cut a 5-inch equilateral triangle out of the white craft foam. Cut a half-inch slit 1 inch from the top and 1 inch from the bottom.
Slide the straw through the two slits in the sail. Secure the sail near the top of the straw with hot glue.
Insert the bottom of the straw into the hole in the center of the foam boat.