I have major asymmetries, so I am always fighting to get myself even, and always have more challenges one way than another. I have found with my mare, I have a much harder time getting her to carry herself well in her hollow direction, specifically for the reasons here.
Yes, this is a typical general audience high level article, but I appreciated seeing an article which stated the hollow side can be more of a problem.
https://dressagetoday.com/instruction/how-can-i-make-the-half-pass-flow
My gelding’s hollow side is his easier side, but he is short backed and very uphill, so he can’t really fake bend. My mare is longer and lateral bend is easy, so she can fake it - which is why the stiffer side actually gets more correct bend. Any observations/thoughts from your own horses?