Real Vmc determination or demonstration is a hazardous area of flight
The following is from a Titan manual, are you suggesting such training should not be carried out? Is it industry practice to carry out this procedure in training?
PROCEDURES FOR PRACTICE DEMONSTRATION OF VMCA
One engine inoperative procedures should be practiced in anticipation of an emergency. This practice should be conducted at a safe altitude (5000 feet AGL), with full power operation on both engines, and should be started at a safe speed of at least 115 KIAS. As recovery ability is gained with practice, the starting speed may be lowered in small increments until the feel of the airplane in emergency conditions is well known. It should be noted that as the speed is reduced, directional control becomes more difficult. Emphasis should be placed on stopping the initial large yaw angles by the IMMEDIATE application of rudder supplemented by banking slightly away from the yaw. Practice should be continued until: (1) an instinctive corrective reaction is developed and the corrective procedure is automatic and, (2) airspeed, altitude, and heading can be maintained easily while the airplane is being prepared for a climb. In order to simulate an engine failure, set both engines at full power operation; then at a chosen speed, pull the throttle control of one engine to idle, and proceed with single-engine emergency procedures. Simulated single-engine flight characteristics can be practiced by setting propeller RPM to simulate a critical engine inoperative condition as shown in Figure 4-3.
wing Flaps - UP.
Landing Gear - UP.
Airspeed - Vsse (102 KIAS) or above.
Inoperative Engine - IDLE POWER.
Operative Engine - 2235 RPM and FULL THROTTLE.
Airspeed - DECREASE at approximately 1 knot per second until Vmca (red radial) or stall warning, whichever occurs first, is obtained.
Vsse is used in training and is not a limitation. It is recommended, however, that except for training demonstrations, takeoffs and landings, this airplane should not be flown at a speed slower than Vsse.
Under no circumstances should VMC demonstration be attempted at a speed slower than red radial on the airspeéd indicator.