Good swimmer may not be symmetric?

I have been trying hard to correct the lack of symmetry in my backstroke. In trying to correct it I swim slowlier As I've tried to graduate from "Old School" in the backstroke, I've noticed that my stroke also is uneven: for example, my left pull is deeper than my right. I see no clear explanation, either (my freestyle is not symmetrical, but that's because I turn to the side for air - something I don't do on my back). I've assumed that this isn't a difference that matters - unless the asymmetry is associated with one hand losing its grip or "slipping" during the pull or one arm pull otherwise being weaker than the other (I say, "is associated with" because these possible signs could be either causes or effects of the asymmetry). On paper, symmetry is the ideal in backstroke. In reality, however, most human bodies are not symmetrical and there's a possibility that the lack of symmetry in a stroke simply reflects the physical realities of the individual swimmers' bodies. So, I'm very interested to hear what others have to say about this ...

I have been trying hard to correct the lack of symmetry in my backstroke. In trying to correct it I swim slowlier As I've tried to graduate from "Old School" in the backstroke, I've noticed that my stroke also is uneven: for example, my left pull is deeper than my right. I see no clear explanation, either (my freestyle is not symmetrical, but that's because I turn to the side for air - something I don't do on my back). I've assumed that this isn't a difference that matters - unless the asymmetry is associated with one hand losing its grip or "slipping" during the pull or one arm pull otherwise being weaker than the other (I say, "is associated with" because these possible signs could be either causes or effects of the asymmetry). On paper, symmetry is the ideal in backstroke. In reality, however, most human bodies are not symmetrical and there's a possibility that the lack of symmetry in a stroke simply reflects the physical realities of the individual swimmers' bodies. So, I'm very interested to hear what others have to say about this ...