My biggest issue with this whole scene is that, at least in my two viewings, I didn’t notice a single shot fired by the resistance pilots. There certainly appeared to be guns on the skimmers, but no shots were taken. Not at the walkers, not at the ties, nothing. Correct me if I’m wrong, though. I didn’t notice it my first viewing, but after seeing it a second time, this popped into my head right after the scene had ended.
Those things were falling apart. I doubt they worked.