After 3 years of use, my Dolphin Echo stopped working while submerged. The rubber exterior cable is in rough shape, especially right where the cable intersects the cleaner's orange plastic cover (very likely the culprit). Going through 3 years of constantly untangling the 50' cable, I'm hoping there is a compatible swivel model on the market but can't seem to find any. Does anyone have any experience or luck with this? Just checking before I buy another OEM and restart my battle against knotted cables.