Grab brush or snake hook I am on a sculpting expirience and i can not really find any difference on these two brushes , grab[g] and snake hook brush. Also what brush is better for extending a mesh? ( i read blender manual,still cant understand the difference).
With dynamic topology, to extend the mesh with additive geometry, use the snake hook brush. Use the grab brush, if you want to make small tweaks to geometry without changing the topology.