^^At my thin girth (exact same as OP’s) I found jelqs (even with a light grip) to be harmful to my nerves and the bulbo-cavernous arteries of the penis…jelqing hurts my scrawny dick - at this girth, I feel very fragile w/ PE. But maybe that’s a good thing - maybe it means less is more for me. I’ve read a couple other instances on these forums (Devotion9 to name one) who is also this same girth but Jelqs injured him as well.
Then again, Sta-Kool started at 4.5” MSEG and jelqs didn’t hurt him, so who knows. Everyones different. Penises have their own morphology, just like many other parts of the body. Our dicks may literally be built somewhat significantly different than others (IE different # of tunica layers, thinness or thickness of structure walls, veins/arteries, etc). Some people are just fragile! I agree w/ the OP’s opinion that thin sometimes equals less to work with and less to possibly gain in the end.
Bump! More skinny guys who gained, I demand it!