In what way was it successful?  In many ways which could not have been predicted.  The students liked it.  It was fun.  The discipline problem in traditional books often is that it is burdensome to always play left when there is an "L" over a note and right when there is an "R".  Most beginning students, anxious to express themselves with cohesive rhythmic sounds, tend to play the easiest sticking (in their inexperienced opinion), which may come to them, frequently ignoring the carefully worked out sticking patterns of expert authors of standard instruction books.  There is no way this type of cheating can be done with ChoomBoonk.  Choomboonk students inevitably use the prescribed sticking and love it, because there is a rhythmic reward for doing so.  They have fun from the first lesson.  After preliminary hand grip instructions, the student is usually able to play interesting rhythms with snare drum and cymbal in the first half-hour, especially enhanced if the teacher can accompany with some simple tune on a keyboard instrument.  Having sticking discipline dispensed with and an outlet for enjoyable expression provided by ChoomBoonk, the way is left clear to study music-reading in conventional notation with a standard text without being concerned about sticking and coordination.  The book allows a teacher or student to work on two important areas separately (execution and reading) so that the one necessary area of study does not encumber the other.