In my OW class to night, are last class, we just got to mess around. There was a asent line they had in the pool with about 4 pounds of weight at the other end. And I was thinking of lift bags. And I took off my bootie made alittle loop in the rope put the bootie threw the loop got my Octo filled the bootie with air and up it went. My OW inst saw my do it and he was clapping his hands under water. When we got up he was like " Of all my years of diving never saw that before. Try is some times it is kind of KEW