I use porcelain and most of my forms are quite fine so I throw everything on batts. This means I can take a just-thrown form from the wheel on its own board, removing the danger of warping that can occur when sliding a piece directly from the wheel head.
I throw a flat disc of clay on the wheel, centre a wooden batt on top and hammer it down with my fist. The batt then becomes the throwing surface.
There's quite a rhythm to this process, a communal beat between the rotating wheel, the drumming of closed hand on batt and the open hand paddling of clay to begin centering. I regulate my breathing and use the moment to clear my mind of clutter and prepare for the singular focus throwing requires.