The damn thing could sink a boat with that much mass plus the weight of the three or four guys needed hoist it all leaning over the gunwale at the same spot.
Doing this is illegal. Their populations seem to be soaring, and goliaths are no longer on the U.S. Endangered Species list, but they still enjoy complete protection from harvest; removing one from the water is a legal no-no.
And most of all: Pulling a fish this big into a boat for a photo session may well doom the goliath, in part because that enormous mass is designed to be supported in a medium such as water. Manhandling it inside a boat can wreak havoc on internal organs.