Notice the perfectly shaped plug in our hose from the skin cooler. Not just any beer bottle will do. miller High Life has the perfect long taper to fit. I want to thank Buck for straightening me out on the procurement of the plug. I offered to go through the trash to find just the right one. He pointed out that he was above soiling his hands on a plug from the trash and I should help lighten the weight by drinking a fresh one. The sacrifices I am making for this trip are amazing even me! We were able to utilize the excess water coming in from the packingless shafts to cool the port main engine.