I learned about, and kind of use a variant of, the secure knot from this site starting from a number of years ago. I find that I'm lazy and it's easier for me to loop one bunny ear twice over (asymmetrically) rather than both ears once each (symmetrically). Old habits means that I'm used to using my left hand to loop the ear and then my right hand to pull it taut.
Maybe I'll try to do it symmetrically more often.