HYAA – Save Time Communicating with Your Team Township Field Playability Guidelines 10421 Registration now open. HYAA Mission Statement Holmdel Youth Activities Association HYAA is committed to providing youth programs that maintain the highest standards and guarantees a fun positive experience for everyone involved regardless of race gender or sexual orientation. The goal of Holmdel Youth Activities Association is to develop and promote the ideals of responsibility hard work sportsmanship teamwork and fellowship within a safe and positive environment. These goals will be accomplished by providing structured programs designed to educate both participants and parents in all aspects of the sport.