I know that sound like a dumb question. Recently I had the pool replastered and when they asked me if I wanted to keep the hook things that one would use to attach a safety rope, I said "no". We would never put up a rope separating the shallow from the deep. But... I did use one of those to attach my thermometer to keep it from floating into the skimmer. I have trees that hang over the pool and I need every bit of skimmer space for the debris. How is your thermometer attached? Is there some other kind I could buy that eliminates the floating aspect?