Impressed there's still differing opinions on a 2 year old thread! Being a front guy I don't see this much, however if one of our back guys sees somebody is hit and the ref is on their way we expect them to shoot that person with no hesitation to make sure they don't get caught playing on. Why waste time trying to communicate a hit (not to mention a ref having a bad day could still pull a penalty as communicating is considered playing on) when you can get the job done in a second and get back to shooting bad guys.