There is no such thing as no rules. If there were no rules people would die or in the least be maimed for life. You can recover from a snapped arm or a broken leg. You can't recover from someone shoving their thumb through your eyeball or ripping your ear off. Since you are a practitioner of BJJ I'd like to ask you a question. When you are rolling around with someone on the mat what's to prevent someone from hammering you in your groin and biting a chunk out of your arm or leg? Shihan John Petrone of Defense Institute in Colordo Springs was named Jiu Jitsu man of the year at one point. He's actually grappled with some of the Gracies. I'd like for you to ask your instructor about him. Here's his myspace page. Email him and ask him. Tell him what you think. He'll give you a very intelligent, fair and honest answer.
http://www.myspace.com/vajcsco
Carlos Valente was in Hawaii first, he convinced Relson to move to Hawaii. Relson, Rorian and Royce went "dojo storming" in Hawaii to build up their initial student base. They fought anyone, under the rules of the instructor in question. I was a wing chun instructor at the time, myself, along with 32 others were taken down, slapped silly and eventually submitted by Relson, Rorian, Royce. We tried poking them in the eyes, kicking them in the groin, one of my friend's tried "clawing" their necks. Same result occured with EVERYONE. And we don't have mats in chinatown, it was done on the concrete. 29 people signed up for "Gracie Jiujitsu" three decided to try and find solutions within the the wing chun system. I have practiced wing chun/JKD concepts prolly fifty or sixty times since, and that was 1993. At Relson's original academy at UH, it was right next to Master Kham's muay thai school, constant fights between schools, I trained at both places, so stayed out of the fray. Many a people came down to UH, and challenged Relson, most were beat on by purples and blues. Trust me when I say this, getting that groin shot in aint as easy as you think when you are getting punched/kicked and trying to defend the takedown. Once the other guy is on the ground, and he has given up top, it is GAME OVER. I have seen many a folk eat a leg kick to deliver a straight cross and KO someone.