How to attach bball hoop to roof
We had one on our garage roof, when I was growing up. As I recall, they used perforated steel 'L' angle. It was a rectangle at the front, the base of the rectangle was lagged into blocking under the roof. It also had two diagonal braces one on each side between the top corner of the rectangle to the roof and these were bolted to short pices of the angle lagged into blocking under the roof.
Hopefully, your garage doors will be able to stand up to the errant shots and passes from a basketball.
What we've got here is... failure to communicate. Some men you just can't reach. So you get what we had here last week, which is the way he wants it... well, he gets it.