If I ever get to the point that I can't physically turn round and round to fly the pattern, I'll probably go back to building stick and tissue free flight models.
I'm also learning to be a judge for CL stunt. I could do that even if I can't fly the pattern anymore.
I would imagine that some (many?) of those who can't fly any more, either were judges already or will learn to be a judge.
If you can't fly anymore, but could be a judge, I encourage you to contact Steve Smith or Mark Weiss, or Mark Overmier. They are developing a standardized method of training judges.
Joe Ed Pederson