From somebody who had the distinct pleasure of hooking and landing a 78 pound 'mud cat' a few years ago....I can let you all know that bringing in one of those is much like dragging in a boulder that tries, on occasion, to drag you the OTHER way! Oh...I landed mine...weighed it....and released it.
Once catfish get to be that size they don't taste particularly good, by the way.
When you start thinking about BIG catfish then our local (USA) types are mere midgets....THESE are big catfish!!!