To minimize tangle risks when dropping to depths approaching 1,000 feet, the section of mono from the crane swivel to the first 130-pound, three-way swivel is 16 to 18 inches long. The section between this upper three-way swivel and the lower three-way swivel is 21 to 24 inches. And there’s approximately 15 inches between the lower swivel and sinker. Again, knots join these sections and swivels. The prominent use of swivels counters the line twist from dropping and retrieving, drifting and the current; the fishing line and terminal rig must lie perfectly straight as they soak on the bottom.