I would have said something like 1)"I heard you guys went to a pub to cut loose last night."
Did you ever hear someone saying not writing 2)"I've heard of your having been involved in an act of outrageous behaviour in a pub." I've been travelling a lot. I've never heard someone saying something like this.
*****
NOT A TEACHER *****
(1) I agree with you that "regular folks" might say:
Hey, guys. I heard you went wild at a bar last night.
Actually, I think that most people would say, "I
hear ...."
(When the speaker just heard about something, s/he often
uses the present: Congratulations, Mona! I
hear that
you are getting married next week.)
(2) I also agree with you and the other posters that it would be
fine to say:
I heard about you guys
being involved ....
(3) But I think (think!!!) that some books suggest for "perfect"
book English:
I heard about you guys
having been involved ....
As I understand it, you should use a form like "having been involved"
when you are talking about something that happened
before the main
verb. That is:
I
heard (today) about you guys
having been involved (yesterday)....
*****
P. S. The other posters have already done their usual excellent job in
explaining the choice of "you" or "your."
One book says this:
I heard about
you doing that. "doing" is a participle.
I heard about
your doing that. "doing" is a gerund.
This book, however, agrees that the use of the gerund
"will [usually] express the idea more neatly."
*****
NOT A TEACHER *****