Re: How to get a wrestler to throw faster?
If you are teaching the very basics of boxing, great, all they need is practice because as you know, boxing technique takes time and then more time.
Forget that they are wrestlers. They should not be any worse than the average joe who comes into a boxing gym for the first time since they are athletes already, but as you know not every average joe makes it into boxing so don't expect your coaching to succeed fully either. They are the ones who have to make the effort to learn and not all are going to stand out. Stick to the basics, technique, relax them and maybe analyze them individually and make tweaks as they progress.
If you're time framed, a prayer might help.