Tiger Rock is apparently a joke. I'm not saying this to be mean-spirited. I only mean that I've literally heard it used as a joke many times.
In some of my trips to America, I've lived with some ex-military students and friends of mine who used Tiger Rock synonymously with McDojo very often, so much so that it became some sort of a running joke with them.
Not to be insulting, but I agree with them. I've personally sparred against approximately nine so-called black belts of Tiger Rock over the years. Sometimes against two or three at a time, even. Some of them were very fit, some of them weren't, but all of them were very cocky. Ridiculously so. It was fairly obvious to me, and apparently my students, that they were definitely not even shodan level. How could they possibly be when none could even touch me? Granted, we are trained for handling multiple opponents without getting hit or submitted, but to not even be able to properly grab me at all?
If I had been their teacher, I would not have advanced them past 3rd kyu.
Now, I'm not saying that you didn't earn your green belt. I'm sure you worked hard to advance to that level. And I'm sure you're competent enough in a fight against normal people. But it's likely best for you to find some other school to train in. Perhaps you want to try Aikido?
22 years of martial arts experience. Black belts in Aikido (4th dan), Judo (3rd dan), Karatedo (shodan), and Taekwondo (first degree black belt). Years of training in Muay Thai, Kendo, Juijitsu, Escrima, Capoeira, and various other martial arts.