I have gained 1/2 to 1 inch in non bone press length. From a Few months of hanging and extending as well. I worked my way up to 20lbs when I was hanging SD while sitting down on the bathroom sink with my legs on a chair.
BPEL: 8.35"/ NBPEL:7.0" /EG: Apprx. 5.5"
Live long and prosper.