We've used a Polaris 9300 robotic cleaner to clean our 30,000 vinyl lined inground pool for the past 3 years. It now has multiple issues for which the repairs are almost the price of a new robotic cleaner. We are now considering the Maytronics Dolphin M4 as a replacement. From everything we have read, this will be a good replacement for the Polaris 9300, and we are hoping to get more longevity out of it. Our one concern is this: during the winter months, we do not close our pool, but rather place leaf nets over the surface which are held in place by water bags on the edge of the pool. The leaf nets do not hit the surface near the edge, but often times get weighted down and do lay on the surface of the water in the middle of the pool.
We use our robotic pool cleaner during the winter months to keep the pool floor clean. We have been able to successfully do this with the Polaris, but wonder if it will be an issue with the way the Dolphin M4 climbs the walls. Any feedback?