Druu;1176372; said:You would NOT use an umbrella net. the umbrella is connected at 4 points with a fairly thin metal wire which may bend under the weight of a large fish. Stretcher type slings are used to move larger fish- similar to the set up public aquaria use to move cetaceans. I believe there are pics here of someone moving a 5 ft arapaima with a sling. The sling was made of a large towel to ensure that spines did not get caught in mesh.
http://www.monsterfishkeepers.com/forums/showthread.php?t=49048
