While I terminate you for sabotage.. Stop giving bad advice.
Go for it, daddy. Show me in your booklet where it says that I need to follow a certain piece per hour loaded into a package car. Maybe I'm feeling sluggish that day. Maybe I haven't eaten properly. Maybe you're a d* and need to come down a peg. I'll load one box at a time, let everything else go by, and then what? You can't do a damn thing about it. It's not bad advice. It's good advice. Go ahead and try to fire someone for turning off a belt to clear egress issues. Do it once, maybe, but it won't stick. The second time you do it will create a trail of harassment and becomes a legitimate reason for your early departure, lol.
Fun story time: I had a FT preload supervisor who told me "I've been doing this for twenty years. You've been here three. I'll be doing this twenty more years and you'll be long gone after I fire you one of these days." The short version of this story is I'm now a FT driver and he's out of the company. Why? Because he was an insufferable d* and gave us plenty to file on daily that caused corporate to really look into him. He once "fired" me when I hopped a belt, that was off, while the front belt (two separate belts on one line) was on. Another time he "fired" me because I had an "attendance issue" and "constantly missed the PCM" that was 5 minutes before our scheduled start time.
Stop harassing your loaders and actually give them some friend'ing support when they need it. Whether it's pulling for them so they can clean up a little or bringing in another body from the 15 extra people you have in unload, do something about it instead of harassing them.