Divers get training in clearing the ears before being allowed to dive.  Because of the potential for side effects of the valsalva maneuver, scuba divers and free-divers may train to exercise the muscles that open the Eustachian tubes in a more gentle manner. The French underwater association ( Fédération Française d'Études et de Sports Sous-Marins ) has produced a series of exercises using the tongue and soft palate to assist a diver in clearing their ears by these techniques. These recommendations were based on work done at the Médecine du sport, Bd st Marcel, Paris.  
I also have this problem. I got it aboutt 4yrs ago after a really bad cold/flu when they blocked. I have been to ENT specialist and had examinations and hearing tests. They are not keen to do anything. I have done the Salt Water Nasal wash for ages and nothing. Also prescribed antihistimine and nasal spray. Done all the other stuff. Nose blowing, jaw wiggling, massaging in front and behind of ear. Nothing. I've even spent money on hopi ear candle treatment. It is driving me nuts too. Sometimes they pop but it lasts nano seconds.
Though they each try to get your symptoms under control, they do it by different mechanisms which when taken altogether, can work even better than by itself.
So, using the table below, a patient can generally take one medication from each column at the same time (but not more than one medication contained within a column unless directed by your doctor). For example (highlighted in BOLD ), a patient can choose to take allegra, nasonex, singulair, patanase, nasalcrom, and saline flushes all at the same time.
Steroid Nasal Spray
Anti-Histamine Nasal Spray
Cromolyn Nasal Spray