I agree with BmthBloke, age doesn't really make a difference when Bocking. As BmthBloke said, we Bock with fellow Bockers with varying ages. I am not concerned by peoples age as we are all crazy people for taking part in this sport. It's not very rarely when you need to be over a certain age on a meet. BmthBloke and I have gone into a pub on our Bocks and experienced the delights that is "Not Sober Bocking". I am not suggesting any one should do this but BmthBloke and I are mature enough when to know when we had had enough and wore our pads during all the proceedings.
The only time that age comes into play, is that the older Bocker are more worried about the damage that could be done before jumping a wall or such. A younger Bocker will just do it and worry about the conotations later.