We run 2 circulators on timers and thermostats. Since I got rid of the airboat I don't make too many winter trips out so we pay ISS to monitor them for us. I am still on my original set of fins on both and have not lost one yet in the last 4 seasons, although we keep 2 on hand just in case.
I may try to borrow a sled in the next week or two to take a ride out for myself just to check.
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