? why have a catcher on the roster who an injured catcher would be better than?
.....in itself is a bad choice!
Strong arm means they can throw, doesnt mean their a catcher!
School ball is limited to the population of students. In some areas - even in So Cal - you don't always have a lot of options for the quality of players on your roster. The current #2 catcher was the #1 two years ago because she was the only one willing to do the job. I suspect there is a vision issue that is causing her problems. She does a whole lot of stuff right - stance, body/arm position. etc. - but just can't seem to keep the ball in her mitt very well.