Clamping Erection Level vs Engorgement, do you need to stay fully or somewhat erect?

When you clamp, do you try to maintain the erection at a certain level?
Or do you just start out full erection full engorgement then let the erection level drop while keeping maximum engorgement?
Is engorgement the only thing that matters, so that you can let the erection level fully drop?

What difference does it make when you do it one way vs the other?

Also if you’re uncircumcised, should you roll your foreskin back while clamping?

I don’t maintain it a certain level. It pretty much maintains itself once it’s clamped. I clamp fully erect. And it’s maintained at erect to mostly slightly more than fully erect. As far as erection level dropping, I’ve never had that happen to me while clamping unless the clamp moves out of place. It’s ultra sensitive in that state and light touching is all that’s needed. I don’t imagine much could get it to drop save maybe loud pounding on my door followed by the words, OPEN UP IT’S THE IRS!

Foreskin is already retracted due to the erection. I leave it as is..Be careful with clamping if just beginning. I suggest 5 minutes if you’re just starting out.