I'm a waver as well, I tend to say hello, good morning to those I pass after I call out I'm on your left, I say it to those coming from the opposite direction. I say it to anyone who will listen Most often I get a positive response, sometimes I'm met with silence.
My son has told me "Mom, you'll talk to anybody!" To this I answer, "and what is wrong with that? If more people spoke to each other and treated each other the way they'd like to be treated, there would be a lot fewer problems in this world "