OK, so I tried the the inner tube ring. I bought a inner tube then cut off about a 1inch strip. Very tight fit,actually it took some work getting it on. So I did three pump sessions of 20 min varying from 6Hg to 3Hg during those sessions. Huge pump by the way. Here is the thing that surprised me the most, I was so worried about getting a baseball bat effect because the the pump was huge and the tube ring was so small and tight. Well after about 15 min after I pumped I finally took the tube ring off because of the worry of the 3B effect (BaseBallBat). To my surprise the area where the ring was,was as pumped if not more than the rest of my dick! Now, I do not know if this was a first time thing or what,but I am going to find out.This tube ring kept a great engorgement but not so tight where it was cutting of circulation. I think that it’s tight fit but just some give to it makes it a perfect ring for pumping during or after. Only downfall is the putting on and taking off.
OK, so what would happen if you had a tube the full length of the penis? Is that what ‘condom pumping’ is about? I haven’t tried either, but I’m tempted.