I had some of the same problems this year in co-ed..... and in your OP i have at least 3 ejections (if its 3 different people saying those things)... strangly enough after my total of 5 ej. this year the knuckleheads have learned. Well, at least till this Wed. night.
Dont give up... as long as you made the correct calls (and it seems so to me that you did) puff your chest out and be proud of a job well done.