Over-sized Pinnae?

After reading about experiences with the ProEar mask, Robert Kopki (Boca Raton, FL) felt compelled to write to Undercurrent regarding his experience. Although recommended by a dive guide in Bali (who had very small ears), the mask's ear cups wouldn't seal on his larger ears.

So he uses a mixture of clear rubbing alcohol and white vinegar in equal parts, recommended by an ear doctor. He applies a few drops to each ear for 5 minutes after diving and has not had an ear infection since. Others put their trust in a few drops of tea tree oil or even olive oil before diving to give an element of barrier against the water, and there are proprietary remedies also available. Of course, none of these are effective against the problems of a perforated eardrum.