If you dont want to use a rooster collar and are permitted to have roosters, But don't want them/him yo crow at dawn. Then you can consider a rooster cabin. this is a dark and sound proof cabin for the night. The roosters sleep in it untill you get him/them out.
But do be carefull. You have to put enough pipes in for ventilation.
When the rooster goes to sleep with his flock, you can easily take him out and put him in the cabin.
This may work for when roosters crowing in the morning, but what about during breakfast time, brunch, lunch, mid afternoon, and evening? I have roosters that crow at all hours of the day.
I am allowed to have chickens, and have excess roosters from broods naturally hatched. Not usually a big deal, but Thanksgiving is coming up soon and one of my neighbors is having family from all over the country come to celebrate the holiday. I would go ahead and process them, but many of them still need another month to get to full size, and the processor likes to have at least 10 at a time to make it worth their while. I pay $5 each to have it done professionally.
So I was sure that it wasn't too tight before I put him out in his run. But I have had a problem getting it to where he doesn't crow. I have to adjust it every other day or so and then he freaks for a little but I watch him or stay near for about ten minutes to make sure he is alright and so far he's been fine. When he has gotten really upset from an adjustment he has dropped some of his pretty sickle feathers from his tail. I think it's mainly because he will back up trying to get away from whatever he thinks is grabbing him (watch some of the youtube videos about the collar). I have medical issues/medications that stop me from waking up very early so on the days that I notice him crow I just cross my fingers and hope that he wasn't doing it super early in the morning since we have double pain hurricane windows and I can clearly hear him inside the house (my husband thought it was a child screaming from the other side of the fence). Luckily my second rooster has yet to crow so I haven't had to try using a collar on him but most of the time "Big Papa" doesn't even realize it's on. I hope this helps. Let me know if I can help anymore and good luck adjusting it so you can keep your boy! We hope the collar works well enough that we can keep ours too!