I often lift my left elbow, using the shoulder to move my hand up & down the neck. At the same time I try to move my elbow forward, to keep my lower arm as upright as possilbe. All of this without forcing anything of course. Thus the angle of lower arm - wrist - hand stays the same. I find it very confortable. Yet I see many players who let their elbow rest against their side and move their lower arm from there. So I would like to know what you guys do and what you think of it.