I am a new pool owner, having purchased a house with a pool that is about 50 feet long, 30 feet wide, and about 7 feet deep on average. I would like to heat the pool using solar panels, but the roof I can use is only 20 feet wide and 10 feet tall. I live in a very moderate mediterranean climate with an annual temp range of 55-80 degrees farenheit. Can anyone give me some advice? Thanks!