I can tell you that I saw almost no dif in just taking 30% over 50% or even 90% of a 3 foot mother. It may depend on strain but Hawaiin and Papaya recover very quick if I only leave 2 shoots per branch. I was taking more than 50 each time just to keep it trimmed back.

We just took 40 clones off a hawaiian the other day and mother was only a month or so from clone herself. She looks bare but in just a few days growth all over.