Okay,  so using the shot clock for BC violations is a pro mechanic/philosophy. Working in the Pro-Am this summer, the vets (NCAA & CBA guys) said  when the 24 second shot clock strikes 16 you have a BC violation as opposed to counting (with or w/out pressure). 
I guess I better start getting my hand up on OOB violations as well 
 
 
It was so nice to just point & verbalize.