I always felt that fight scene was very strange if not even ridiculous. The Klingons are steadily shooting but the Enterprise did mostly not (return) fire. Some (rare) faint shots at best. When they started at one time REALLY to shoot they blew immediately one bird of prey away. If they had done this from the start, instead of just taking the blows, they would have easily destroyed all three enemy ships. Okay it was probably a question of (production) cost, but still.