Well tbh the handling of the new hardsurface brushes in Z feels very random and hard to predict - I personally get much more controllable results using Muds 'update plane'-off. But yeah new things to explore for sure. All in one I am still a firm believer in following an existing pic used as a reference to build a basemesh…
you know ironically I made a TON of rocks recently if your going for some BIG chunk rocks in a setting of either a FPS mode OR in a Dungeon crawler setting where I did both my work flow was rather simple 1-MAx, Make a basic Sub D box 2-import box into zbrush (assuming your using 3.5r3) 3- Get some intresting shapes on it…