Signal the '3' then wave it off......

[just another ref]

Originally Posted by fullor30

Agreed, and more often than not, a last second three attempt is taken in desperation and well beyond the line, so it's obviously a three attempt which wouldn't require a quick mark.

Originally Posted by JRutledge

Obviously?

I would not go that far. For one thing all games do not need a 3 point shot to end the game if the game is close. And if the foot is on the line that needs to be clarified some way.

Peace

If it's well beyond the line, it is unlikely that a foot would be on the line.