How much length from pumping alone

Unfortunately, I acquired an injury from stretching a year or so ago and although it healed, it left my dick very prone to injury from stretching and even jelqing. There is a weak point in my dick that will never go away. It heals if left alone and function is completely normal. It just can’t take being pulled on. I was hoping that I could avoid injury this time by doing just jelqing but the injury eventually came back. I am desperate for length but I can’t do normal lengthening exercises. How much length can I get from pumping alone? Length is a major deal for me. I need an extra 1.5 inches in both erect and flaccid length. Thanks.

Nobody has crystal balls here. Balls, yes.

Lots of pumpers report length gains, and lots report girth gains, too. You’ll only know if you try it. If you do, read the Pumping 101 article and stick to it like super-glue so you don’t aggravate that old injury again. Any aggravation and you need to pull back on both HG pressure and time in the tube. Take your time with this and you should be OK.

Blue balls, maybe.