For some reason I've always done a "palm, hook, push" without it ever being taught to me. It might be because when I first started I was too little and weak to get a good grip on the bolt knob with my fingers.
i learned it cause one of my first centerfires was a SMLE.....so now i run all bolts like that, my wife uses the other method and as a result hates any of my cock on closing rifles....