When stunting your dips should be 2 counts down and 1 count up. Going slower down will help maintain control over the stunt during the dip. Going faster up will provide the power for the upcoming skill. The ratio of coming up in half the time it took to get down emphasizes that coming up needs to be twice as fast and powerful as dipping down.
I believe Saleem Habash, former coach at the University of Kentucky and Dunbar High School, was the first one to tell me to do this, but several of my coaching friends use it. Kenny Feeley would add the depth of the dip should equal the length from the bases’ wrist to elbow.