Of course anyone could do cleans & push/jerk presses from a set of pins off a power rack (about a mid-thigh high start) as their only shoulder/trap/upper back exercise but I surpose that would not be a conventional way of training for most BB'ers. Too startling and unacceptable an idea for most of them. And than again, the delts/traps and upper back could obtain an unbelieveable degree of thickness and pure power fairly quickly. Not to mention the influence on building bigger biceps/triceps and a strong lower back & hips. And if anyone was crazy enought to do those clean & push/jerk presses twice a week for 3 or 4 sets of 7-12 reps they would just have to go to the trouble of buying larger shirts anyway. And they cerainly could do DL's in those same clean & push/jerks presses workouts, which would probably be a good idea. I, myself, would rather do weighted medium grip (hammer grip) chins than DL's but some people think DL's are the only way to build a superior back. Good Luck.