Can't picture exactly what you are planning but I have lost some strong tugging fish due to broken fishing line over the years. I would think first of fine metal cable as is used for decorative modern lighting. Maybe even clear plastic subroadbed as used in restaurants. I seem to remember Flounder rigs have a metal connecting cable. Not sure what it's breaking point is. Just not warm over line, think string, think $$$$ train.
Think of the extensive damage resulting from a 9' drop, also a possible injury. Nix on the fishing line.
There are no bad questions on this forum. Maybe some interesting answers but all questions are in play. Thank you for asking.
