For effective and exciting triple-tonguing, you need to make sure you are playing the notes evenly. To develop this, I play a series of triplet patterns on single notes at a tempo slow enough to single-tongue. In a 4/4 measure, play an 8th-note triplet (single tongued) followed by a quarter note, then an 8th-note triplet (triple-tongued) followed by a quarter note. Repeat that measure over and over, each time trying to make the triple-tongue beat sound as even as the single-tongue beat. So you are ...