biter

Can anyone tell me if this is or isn't a good idea? I leave Florida for 5 months each summer. I have been paying a guy to take care of the pool plus the cost of chemicals and electric. But each year I have problems when I return. I'm considering drainging the pool (10,000 gallons) and leaving it empty while I'm gone and refilling in the fall when I return. I have a screen enclosure and there aren't any trees nearby. What are my exposures? Thank you