I almost always bury my ends. When I'm in a rush, I will thread a loop of polyester thread through a needle (put both ends through the eye) & use that to pull the knot through to the back & inside. Most of the time it goes faster. Sometimes the poly thread snaps in half. Sometimes it out-competes the knot and breaks my knot, though, which means I'm having to unsew a bit and re-do that section; so when I can, I prefer to bury the old fashioned way.