What most people do now is take 25 waterskins, 3 spots, mine 3, drop 3. Repeat till their skins run out of water then refill em. Yea this is what i take in the beginning, when one runs out i just drop it. The 25 waterskins last like 1,5 - 2 hours. Then just tele al kharid and run back. Takes about 4-5 mins.