I've tried doing that,seeing the targets,then visually imagined shooting them. It didn't work for me.....maybe I have a crap imagination. I think there's a major mind to muscle connection involved. So I need to actually shoot to warm up. On seeing the clay the mind fires up,releasing hormones (adrenaline),heart rate speeds up,blood rushes to the muscles,which in turn prepares them,sharpens your vision,focuses and prepares you. I don't get the same emotion from imagining myself shooting. It's just controlling the amount of adrenaline I sometimes get. Fine line.