Thoughts on this method to heat my pool?
So, I have an intex easy-set 12' pool. We have finally leveled the ground and re-filled it and it works great. I live in Texas the swim season is pretty long already. I have this all rigged up with a bungee cord tether so I can swim in place for exercise. I dug out the center to give me another foot depth where I needed it. I also have a solar cover and the entire thing is covered by an elevated parachute tent for shade/wind block. (Also modesty). For now the water warms up significantly enough by about 10 am without much heat loss at night. I have thought long an hard and this is what I have come up with to heat it during the colder months. I can build a typical solar collector with hoses and hook it to either my saltwater sand pool pump or the cheapy pool pump it came with (which would be better?) then put it on top of a metal roof piece in the yard slightly elevated from rain water, then attach radiant floor heating mats underneath it. I am hoping this would provide a boost of heat on less sunny days or when it is significantly cold, like December. With a much cheaper energy bill. I am guessing I will need to insulate the heating things a bit or something. Feel free to suggest anything. I am just kinda in plan mode atm.