I know this sounds stupid and believe me, it's ignorant as hell.
But my method for a ding every swing is the Rumplestiltskin method.
I pull the powerbar up to the desired power, when I release the button I say
RUMPLSTILTSKIN LIVES
Right when I say" Lives", I hit the ding. It depends which ball I'm useing of course with a cheap ball I say it faster.
I know it sounds idiotic but it works for me.