[RookieDude]

An official the other day told me about a situation he saw at a small private religious school.

The school had two of those free standing backboards, kind of like you would have in your driveway.
The front face of the bacboard went out the required 4 feet from the endline...but the base of the backboard was only about "20 inches" from the endline OOB.

The official said it was very hard to rotate while doing the 3-whistle game.

That wasn't the worst part. A player crashed into the base of the backboard and was injured. (How bad, I do not know)
A coach, or father, from the stands went nuts when this happened. He screamed at the officials that this was not safe, nor was it legal.

Rule 1 Sec 2 Art. 1
There shall be at least 3 feet (and preferably 10 feet) of unobstructed space outside boundaries.

Watta ya got?