As a southpaw im looking for new defense tactics to add. And the pull back aka lean back whatever you want to call it is catching my eyes.

To a lot of people its more of a fancy/risky manuever but In my experience if you know what youre doing you can have a lot of success with it.
As a southpaw I read the pull back is actually MORE effective because of the distance of the rear hand and ineffectiveness of the lead. 1st question is on that just want to see other views on that statement?

2nd question is just proceeding the pull back and would like any tips/advice for trying this. Pros-cons

Thanks in advance