I had a unique problem with my Dophin the other night. We where out by the pool and heard a strange noise from the Dolphin at the water line. The cord had gotten pulled into the brush on one side. Shut it down and removed it from the pool. About 2ft of cord was stuck between the brush and Dolphin. Was in there pretty tight. Now I'm gun shy and keep checking it, which is not what I want to do.