Answer:

A winterizing kit and cover is a good start. Make sure you have added a large dose of chlorine that will help to keep the nasties from growing in you pool while you are gone. However, since it is summer and hotter, it is more condusive to the growth of bacteria, algae, etc. Therfore the best solution would be a friend or service pro to stop by every week or two to add another dose of chlorine and filter the water enough to mix it in well.