When riding on bike paths or mixed-use paths, there are usually pedestrians walking along them as well. Pedestrians tend to be somewhat unpredictable; they may suddenly turn around or step to the side.
What is your preferred method of warning pedestrians when you are overtaking them? I've been taught to say "on your left" or "passing on your left", but many times when I've tried that, the pedestrians have misinterpreted me and stepped to their left, or turned around to look in a way that actually caused them to move left as well, putting them closer to my path.
More recently, since my current bike came equipped with a bell, I've tried the approach of just ringing my bell once to indicate that I'm there. I worry that this might indicate to pedestrians that I'm impatient to pass them, and I recently had someone yell at me to "say something" when I did so.
What is your preferred method safely overtaking pedestrians you are passing? Verbal warning, a bell, no warning at all and just giving them a wide berth at low speed?