Straight answer like brother @ManPlan86 indicated, have the cock ring on, but always, always, always get the blood to flow. Don't ever let your blood remain stagnant for too long. Massage, massage, massage to get the old blood out of the penis and new blood into the penis if you can't get an erection to force blood in within 5 to 10 minutes. Never ever ever ever ever let the old blood pools in your penis longer than 10 minutes. Cock ring wearing for sex warns you not let the blood trap in for more than 30 minutes. This is extreme danger zone as blood can't cycle through. Cock rings are meant to only slow the blood from flow back to to the body, but allow blood to cycles in and out during sexual activities. During sexual activities, blood cycles in and out of the penis all the time.
So, whatever you do, DO NOT make your blood remain static/stagnant in your penis more than 10 minutes. My recommendation has always been 5 minutes. Massage that old blood out, and get new blood in every 5 minutes within that post-pumping 60 to 90 minutes cock ring expansion session.
Great summary. Just to add for clarity, if you're chasing after girth, don't use the penis sleeve. If you must remain elongated, I rather have the cock ring on and kept on cycling new blood through the penis using the "restrictive" method to slow the blood from leave the penis. It can be a ring at 80% to 90% the size of your normal erected penis girth at the base (not over both the balls and penis shaft, but just the base of the penis shaft). You're enabling gap creation for new cells to duplicate and fill into those gaps, existing cells that are damaged to repair and increase in sizes, or healthy cells pull in the cells that lost their identify (completely damaged and can't be repaired) and pull in the extra cell parts to make themselves larger and larger. This process literally happens in seconds to within the hour. The longest is 24 hours according to cellular studies so far.
To make terminology clarification too, "restrictive" is the slowing of something, where as "constrictive" is to trap or prevent something. This is refering to blood cycling entering and exiting the penis if you use cock rings or devices for your penis. The phrase "don't restrict" should be "don't constrict". SRT uses methods referencing "do not clamp" or "do not allow turtling". SRT uses various healing methods like keep the penis elongated, expanded, or combo of. The SRT restrictive conditions simply indicated that you should not just allow your penis to revert back to their old turtled flaccid conditions.
When we jump into pumping, we have to use restrictive methods to slow the blood down to do our bidding, and throw any method of constriction away, like clamping or devices that stop blood flow completely. We need to play smart, and never foolishly.
