I worked out as a guest with Prof Emperado's school above. Good stuff.
In the interest of listing more of the plenty schools in Hawaii, here's a few (some of these are NOT Kajukenbo, but like Prof Buell's are a direct split or were started by martial artists instructed and awarded belt ranks by Sijo Emperado):
Shioi's Kajukenbo System
http://www.shioiskajukenbosystem.com/We train at Manana Community Park, which is above the Pearl City Police Station on Waimanu Home Road
( Map link to 1310 Waimanu Home Road Pearl City, HI 96782 Please note entrance to the park is on Luehu Street).
Classes are held from 8:00pm to 9:15pm on Tuesdays and also Saturday afternoons from 3:00pm to 5:00pm.
Universal Kempo Karate Schools (Founded 1981 by Martin Buell, about a dozen branches on O'ahu and several on the mainland)
98-894 Kuhao Pl
Aiea, HI 96701-2784
(808) 487-2686
CHA 3 Kenpo (M. Tiwanak earned his black belt from Sijo Emperado before Kajukenbo was named!)
Cha3 Kenpo Karate Association
98-1222 Mahipua St
Aiea, HI 96701-3433 View Map
(808) 488-3817
Advanced Kempo-Karate System (Kajukenbo)
Aiea Elementary School Cafeteria
Johnathan Vance
99-370 Moanalua Road
Aiea, HI 96701
(808) 455-6195
Email: jvance@hawaii.rr.com
Style: Kempo Karate
Advanced Kempo-Karate System (Kajukenbo)
Kalihi-Waena Elementary School Cafeteria
Joseph Ramos
1240 Gulick Street
Kalihi, HI 96819
(808) 383-5676
Email: jvance@hawaii.rr.com
Hawaiian Kajukenbo Academy
(808) 626-2807
(808) 222-3860
Stevenson Kenpo-Karate
Chuck Stevenson
95-703 Lanikuhana Avenue, #R102
Mililani Town, Hawaii 96789
(808) 623-6399
Style: Kajukenbo