Here are some ideas.
Many folks cease aeration when water temp drops in the fall. 50s is a ballpark figure. Then they resume as, or after ice is forming.
At this point, it is advisable to have the aerator in shallower water, both to allow a 39 degree warmer water refuge to develop at the deepest part of the pond, and to have some open water right at the shoreline. This second point is one of safety. A wild animal, pet, or human that falls into the open water can then make it to shore without climbing on to the ice surface.
I spent many years in northern Utah during the 60s, 70s, and 80s. Logan, SLC, Kamas. Where are you?