I have never had a problem with releasing presuure on my ears as I dive down. However, I have a friend that is starting to dive deeper as he progresses but he is unable to regularize the pressure ( i call it ear popping) I suggested he plug his nose and exert pressure until it pops. (which he tried) it then occurred to me maybe that it is not safe. What is the correct method for someone who has difficulty popping their ears? For about three days his ear has been sore and has lots of reverb. He has tried drying it with alcohol to no avail. He is getting frustrated because this is happening almost everytime he goes fishing. Help Please.