I think a bar will make the hang rough. I say this after more than 1000 dives from a boat with a hang line system that really works, even in rough water.
The bar will move vertically with the boat, a line between the two down lines will "float" and be a much softer ride. Put the weights at the bottom of the down lines, 20' to 30' or so, and the hang line at 15'...
The bar will move vertically with the boat, a line between the two down lines will "float" and be a much softer ride. Put the weights at the bottom of the down lines, 20' to 30' or so, and the hang line at 15'...