I just thought I would add to my last comment. I know a whole lot of instructors in many locations, and I don't know why I would recommend any of them. People don't talk about their rescue diver instructors all that much, so people don't have much of a reputation. Moreover, the dive instructors with the great reputations have those reputations for teaching courses other than rescue. It is very possible that an instructor who does a fabulous job teaching a number of different courses and has a well deserved reputation for quality has not taught a rescue class in many years and might not do so well.
Although the class as a whole is not that difficult to teach, there are several skills that are unique to the course, and if you do not teach the course for years, you will be out of practice. When I was becoming an instructor, the Course Director teaching my instructor training class told me of an experience he had. I don't remember the circumstance, but it was some sort of training session in which everyone there was a Course Director--the highest level of OW instructor in the agency. They had to do one of the rescue diver activities, and they were struggling with it because they had not done it themselves in years. You might well have been better off with a brand new instructor who was well practiced in the skills than these highly trained and experienced instructor trainers.