More complex than a hull shape that is perfectly fine with just sinking in in a little deeper when load is added or redistributed. The control system you don't

More complex than a hull shape that is perfectly fine with just sinking in in a little deeper when load is added or redistributed. The control system you don't have or need is inherently less complex than the control system you do need. It's not exactly a problem impossible to solve, SWATH have already been operated half a century ago, but it seems to be rarely worth the effort.