Even though Polynesian tattoos have been influenced by Western cultures, a lot of the heritage still remains. It's like wearing another gang's colors. That's why it can be disrespectful to have a Hawaiian tribal tattoo.
The authentic tattoos represent the rank in a specific tribe. Hawaiian tribal tattoos are usually inked as arm or leg bands. Like the Maori culture, a badly done Hawaiian tattoo design can be an insult to persons of that culture. Get it done by a professional with experience doing these designs.