You've got it... And your movement is smooth and fluid, nicely done. The confusing thing for me was the concept that the note itself is beat 1 of a triplet so really there are two slaps (or taps) that get executed with a triplet. For a quad you have the note itself and 3 slaps. Etc... Also the deeper you swing triplets, the more important that rest right after the beat 1 note becomes. I do quads technically the same way you do which involves a lot of wrist twisting movement; in the future as my wrists and elbows get more stiff with arthritis / age I'll probably try to adopt the other quad form which doesn't do the "flip". I've watched some real pro Texas Swing slappers do quads and they'll syncopate the note melody over the quad, sometimes adding a string-pull-release to provide one of the slaps where they want a note to be heard. I don't have that down yet at all, and actually I'm not sure I ever will, but it sounds great when they do it.