Just an update of the progress i have made since last update. When sucking the air out of the tube with my mouth, i can almost fill up that tube completely. The red dots on the skin comes from over-sucking and usually fades away completely within a week. I still plan on getting my penis to fill that tube completely when flacid, but that could take years, as i see it now. My scrotum skin is so stretchy, that if i would continue to pump, my balls could reach the top of the tube. So no need for rings, weights or pulling but just sucking the air out of a tube.