Thanks for taking the time to post, and rest assured that many members may not be posting but are reading your posts and drinking them in, so to speak. Not to venture into overhead environments without gear or training, but to be inspired to get (even some) of those skills and experiences. Thanks.
There have been some awesome videos on here (I loved the crystal cave among others) and I think any diver with an ounce of skill and experience can differentiate the 'what to do' from the 'what not to do'. If they can't, then surely the oft repeated ufcdiver quote "If you don't realize that 170ft deep on air through a no mount restriction with clay isn't smart, a course just can't help you" applies.
I second that. I doubt that I will ever go in a cave, but I have learned a lot here and have great respect and awe for trained cave divers.