Violation?

[Adam]

On the spot throw in, as long as the player doesn't leave the three foot spot, I'm okay with it. If they leave the spot to retrieve the ball? Violation. Assuming, of course, that they gained full control when I handed it to them. If they hand off is fumbled? Blow the whistle and start over.
On the end-line throw in, no spot, I've only got a 5 second count. Rules don't give me a clear definition of any other violation, so I have to let it pass. YMMV, obviously.
I don't care if the player throws it in from the concession stand outside the gym, as long is it goes directly to the court (no OOB bounce) and touches a player in bounds and is released within 5 seconds, I'm letting it pass. I don't even care if it hits the concession stand. Chances are, if it goes that far, I'll have "5" before they even get to it.
Five seconds isn't that long.
Adam