for someone like me that has COPD, this has been a dream come true...even though I can function fairly well in the water, it is still hard on me to run the vacuum, and impossible from outside the pool...plus, since I switched to a sand filter this year, the first time I tried to vacuum, I had trouble because it would drain the water from my pump basket and not vacuum...I have since discovered that the hose I was using was not water tight at the end it should be...but I didn't think that would matter since both ends are underwater anyway...have not tried again with my new hose. should probably do that just to answer the question in my own mind...lol