I spend a good deal of time in the TA. I'll maybe go in and excercise for 20 minutes before I head to the MA, or I'll come from the MA and go there just to find fights quickly, if I'm in that kinda mood.
Now Dingy, I don't dispute what happened to you... but I must say that this hasn't happened while I've been there, and I would also venture to say that this aint the norm there.
I think the TA is easily big enough to house both types of flying; training and dueling. In fact, the dueling almost always takes place at just one feild - as sort of anything goes fur. I see that most instructors direct their students to an away field, and go about their business unobstructed.
Of course yer gonna run into some @#$heads there from time to time... but I'd be hard pressed to think of how to go about policing this type of thing. Such is life.