Another good tip to see if your ears have a CHANCE to be OK for diving is to equalize on the surface, completely dry, then dunk your head into a sink or bathtub and try it again. If you have even the most SLIGHT difficulty doing either of these thumb the day's dive. If you have trouble equalizing under those easy conditions, just wait until you're 50 ft down and it's time to surface. Like I said earlier, it hurts like hell!