Bryan Hawkins' United Kenpo Systems also uses the 16 Technique charts developed by Mr. Duffy. I was one of Mr. Duffy's senior students at the time. He used the Web of knowledge to distribute techniques more evenly through 1st Black, instead of 2nd Brown starting "Black Belt extensions". This also allowed for more even distribution of not just the techniques, but the sets, forms, and freestyle techniques through Black.
It took a very long time, between Yellow Belt and Orange Belt. I started before we had Yellow, but in terms of student retention, that is where we, and Kenpo in general, lost students. You could go around the corner to Joe's Generic Karate Store or Tom's Take-One's-Dough school and have a Brown belt by the time some of our guys got to Orange or Purple. Of course that made it sorta unfair at tournaments as we got to help ourselves to the trophies. (Tournaments being another of Mr. Duffy's fortes at the time.)
The amount of material per belt chart was much more managable for lower belt students. Then increased to 20 techniques per chart for Brown and 1st Black. You got the same place, sometimes in the same time, but it felt better to the students to be able to progress quicker, is how I perceived it.
Another piece of this was "Black Belt Extensions at Black Belt". Some of the extensions were very long ... but fun, and this distinguished the Black Belt club from the Brown Belt brotherhood. No insult to any Brown Belt intended ... we have all been there, in my case a year between each Brown was the requirement, along with teaching hours and tournaments, 5 per belt.
Also the logical layout of the techniques using the Web of Knowledge was a nice breakdown of techniques by type of attack. It ensured you had the techniques when you were learning the forms ... not something I had in the 24 technique charts I came up under, nor in the Chinese Kenpo charts I did prior to that.
Dennis Conatser or Brian Duffy can give you the real deal speil, but that is how I remember it. Along with Mr. Parker's liking it and allowing us to implement it, then other schools following suite. If I err in any of this, I apologize in advance. This is how I remember it, but I was not developing anything - mostly just working on 2nd Black material with Mr. Duffy and Howard Silva during this period.
Yours in Kenpo,
-Michael Billings
UKS - Texas