I can see not being allowed to attach things to the judges table, I never allow it. I'm busy checking helicopters, etc, its just a good way to get your helicopter broken.
Are they providing tables for the competitors to set up on?
Not sure why you can't bring your own table unless not enough space where they are flying. Racquet ball, handball, squash courts have become very popular as they are relatively tall, typically have smooth ceilings, and are easy to manage to keep competitors seperate from inappropriate coaching. It would be a pain to have students moving tables into and out of a court.
There are work arounds. Mount your torque meter/anchor to a long board with easy hand holds. Have one student hold that as a stooge.
You might have your coach ask why the rule was implemented, I haven't heard of it being implemented anyplace else (except the judges table, that just makes sense for the reasons I mentioned).