After a series of misfortunes in the field in Mens FP - I seriously considered wearing a fielders helmet on the bases a la John Olerud.
I didnt. But I still mull it over...
Anyway - when I call occasionally call SP I stand off to the side so I get a good 90 on the mat ..
If I were behind the catcher, it wouldn't take much for me to be thinking along the lines you are.
I'd suggest just wearing an umpire mask.
If not, I suppose Game Face it the best.