I am in TN and my heater has developed a two drip per second leak. My goal this year was to keep the pool open during winter. I am getting the heat exchanger to fix this but it takes till Dec 1st to get in and I have 24F weather coming before then. The highs are 46F and lows 24-28F for 2 nights. Can I safely keep the pool open? My heater is out in open exposed. I have thought of tarping it and insulating around a bit.