But there again, we brief, but don't demonstrate Retreating Blade stall, Dynamic Rollover, Jackstall, Engine Off Landings with twin engined helis, etc, etc, etc.................Never understood the reason for demoing incipient stage. Most of the instructors I flew with didn't get the parameters right so the demo wasn't convincing. A good brief (and a look at some of the video clips or VR close to the ground) is sufficient (IMHO).