swimmer's ear prevention

I found this online but I didn't save the source:

isopropyl alcohol and white vinegar into your ear. Tilt your head so the solution gets to the bottom of the ear canal; then let the liquid drain out.. A mixture of 1 part white vinegar to 1 part rubbing alcohol may help promote drying and prevent the growth of bacteria and fungi that can cause swimmer's ear. Pour 1 teaspoon (about 5 milliliters) of the solution into each ear and let it drain back out. Similar over-the-counter solutions may be available at your drugstore

You can dry your ears with a blow dryer if you put it on the lowest setting and hold it at least a foot (about 0.3 meters) away from the ear.

Put cotton balls in your ears while applying products such as hair sprays and hair dyes

DO keep your ears as dry as possible.

• Use a bathing cap, ear plugs, or custom-fitted swim molds when swimming to keep water out of your ears.

DO dry your ears thoroughly after swimming or showering.

• Use a towel to dry your ears well.
• Tilt your head to hold each ear facing down to allow water to escape the ear canal.
• Pull your earlobe in different directions while your ear is faced down to help water drain out.
• If you still have water in your ears, consider using a hair dryer to move air within the ear canal.
  • Be sure the hair dryer is on the lowest heat and speed/fan setting.
  • Hold the hair dryer several inches from your ear

also here:  http://www.livestrong.com/article/130861-water-out-plugged-ear/   lots of different advice --here is some:
Create your own ear drops by mixing a solution of 50 percent rubbing alcohol and 50 percent white vinegar. Carefully use an ear dropper to place a few drops into the affected ear. Gently rub the opening of the ear canal and wait 30 seconds. Tilt your head sideways to let the solution drain out. It may take a half hour or so for this remedy to work. The acid in the vinegar acts to break down earwax that may be holding water in the ear canal, while the alcohol evaporates water as it dries. Both white vinegar and rubbing alcohol kill germs, so this solution also helps fight infection. If you do not have white vinegar, you can substitute water in the solution, but be sure to use distilled water to avoid introducing any bacteria or minerals into the ear.

and
Hydrogen peroxide is another effective option to get rid of water in ear. Due to its effervescent property, hydrogen peroxide can easily remove the trapped fluid, along with ear wax and other debris from the ear canal. For this approach, use a dropper to place 4 drops of 3 percent hydrogen peroxide into the affected ear. Allow it to settle for 1 or 2 minutes. Tilt your head sideways and allow the fluid to drain out easily