I worked a jv boys game a couple years ago and stayed to watch a really varsity game worked by three veteran guys. Fourth quarter, illegal screen and the vets let the offenedd team shoot one and one. I tried to tell one of the vets from the end line that they were wrong, so did the furious coach. To no avail,both the coach and I lost. When I got home I sent all three a copy of the rule in a nice way and I got apologies from all three.