A Coupla Things to Try, Maybe
 

Two methods, based on experimentation in this area, have improved things appreciably:

1) Brief mention in pregame with coaches: "Have your players ready to come out on the first horn, we'd like to make the ball live on the second." When this is stated, they are better at it than when this is not stated.

2) When officials go the huddle and say "First Horn", a whistle from each after saying that seems also to bring 'em out better prior to the second horn. When we've done it, it's better. When we don't, it isn't.

Lather, rinse, repeat.

Your results may vary.

10 - 15 seconds? Good grief. Was it this coach's first game ever???

1) Sounds like he was doing it a lot - hit them on offense just once, and that should fix it. A lost possession is a more fair penalty than a free 2 pts for the other team.

2) That said ... 10-15 seconds? I probably would have put the ball in play for the other team as well --- after maybe the 2nd offense even. That's a LONG time.

As others have said, make your point when the team delaying is on offense. One lost possession is all it takes and both coaches will take note.

I agree, it doesnt bother me that much and personally after many years of doing this have always thought if teams are breaking huddle on 2nd horn that was the norm. You say the rule says nothing about being allowed to stay in huddle until the second horn? 5-11-2 only says "a warning signal for teams to prepare to resume play is sounded with 15 seconds remaining" ...the words "prepare to resume" and "remaining" being my point here. I say they get all the 60 seconds to talk to their team and then break huddle and head to inbounds location or wherever on court they need to be. I was only asking a previous poster who seemed to be putting the ball down at the second horn. Clearly, I see no rule for that, nor have I ever seen that happen.

The length of the timeout varies as much on the front end as it does on the back. Some officials will follow the team to the edge of the huddle and spend 10 seconds asking "Full or 30?" About the only significant thing I tell coaches in pregame is let me see a 30 signal or it will be a full. Then, if you get lucky and have a timer who actually starts in a timely fashion and measures the length of the timeout you are all right.

SOme areas hear the horn, count to 2 (or so), blow the whistle and put the ball on the floor.

Some areas hear the horn, go back in, clap their hands, wait a while, and then the teams come out.

Most are somewhere inbetween. You don't want to be (too much) different from the norm in your area.

That's way too long. If the first offense is that excessive, I'm putting the ball down.

And I can guarantee that if a team is coming out 10-15 seconds after the horn, I'm getting 5-10 seconds of grief from the other coach.

"Prepare to resume" means, to many, that they should be getting in position on that warning horn. If the second horn meant they should start breaking the huddle then, there's no reason for the first horn, is there?

They need to at least be breaking the huddle at the second horn.

When going to ROP I prefer to hit them when their either on offense, or defending a backcourt throw in during the first half. "Prefer" does not mean require, though.