Quote - One thing I have started doing is altering density after doing my draping. In other words, drape with a relatively little amount of hair and then up the density for the render.

It's not foolproof--you can end up with hair going astray a little (or a lot, YMMV), but it's well worth trying as an aid to your system. (Unlike changing hair length etc, altering density and hair thickness does not lose your styling and draping.)

I do that, too.  All of the Styling Controls except Verts per hair can be adjusted after running a simulation.  If you don't like the effect, you can just change it back.  There's no need to run the sim again.