Is the base of shaft OK grip a wise idea?

Hi all
I have been PEing on and off since the beginning of the year and have seen some gains. I was experimenting earlier today with this exercise. Say with a 70% erection I grip the base of the shaft tight with an “OK” grip and slowly squeeze. Within 5 secs, My entire penis is filled with blood and very veiny. Girth expansion is good and penis is thick.

I am wondering if there are any drawbacks to this type of exercise? Has anyone tried this before? I think it could be a manual variation of clamping. Any thoughts anyone?

That is one of the ways to Jelg if that is what you’re asking..

No, what I mean is, IS it good as a form of manual clamping?

That’s fine, but if you’re 70% erect don’t try to pull downwardly in a jelqing motion. If you’re simply clamping with your OK-grip that’s fine, but don’t start jelqing with that veiny erection.