In New Orleans, I recently saw a highly skilled upright bassist who was part of an instrumental duo (w/ electric guitarist). His technique appeared superb and I tried to pick up some pointers for my fretted electric bass playing. At times he raised his left elbow quite high - about to shoulder height I'd say. If I recall correctly, he did this when playing close to the nut - probably to minimize wrist angle and/or to keep his left hand "squared" to the fingerboard. Playing eb, my elbow usually remains fairly stationary - and is pretty close to my torso. Should I, at times, extend my left elbow (away from my body) to a greater-than-normal distance? If so, what's the benefit on eb?