Attaching 1/4 square meter grid to pipes by rope. The method did not work
and eventually a hole was drilled in the four corners of the grid area,
a stainless steel screw was attached, and
nylon string was strung between the four corners.
Image ID: reef0133, NOAA's Coral Kingdom Collection Location: Pokai Bay, Oahu Photo Date: March 1968 Photographer: Dr. James P. McVey, NOAA Sea Grant Program