I am having a lot of trouble with ear infections. My doctor recommended getting some good quality ear plugs when in the ocean as he thought it was the major cause of the infections.

My question is , what is best when in the surf?

I currently just use normal disposable plugs , but they don't stay in when they get wet , and usually won't last a full session.
Also i don't like the fact that i can't hear properly , and loose some sense of balance with the noise protection type disposable plugs.