To save yourself a mess come swimming season it is important to winterize your above ground pool. When you are past the swimming season you should first make sure your water is chemically balanced. The next step is to vacuum your pool and make sure all debris is removed. You should then drain the water below the return level only and clear out any water in your lines and pump. You can place a cover over your pool until the next season which will protect it from debris. Summer will be back around before you know it.