I'd buy one if it was made, need one for nile perch up to 125Kg so might need to be custom made.
Want to have a diver's zip at each end so you can swim the fish in and drain holes at the bottom so you can lift it out of the water and only weigh the fish and the sling.
Definately needs poles at the top to avoid bending the fish as you hang it up to be weighed though.
Any idea what these should be made of? Need to be airline baggage friendly!