For an example I can take a model I was working on recently (see picture, full model at [ http://www.marvelousdesigner.com/gallery/735/master-of-martial-art](http://www.marvelousdesigner.com/gallery/735/master-of-martial-art)

This harness consisted of 5 separate objects that of course fell apart during simulation.

Welding a few points together at strategic places was all that was needed to make it behave properly.
Not even 5 min work.