Since I instructed in British Colombia my students were inevitably going to experience hot and high airports. My home field was at near sea level but I would simulate a high DA take off by restricting takeoff RPM to the % power you would get at 6000 ft. They were invariably surprised at how doggy the aircraft felt. It was also interesting that for many the climb rate would improve 25 % to 50 % when they kept the ball in the middle and nailed the Vy pitch attitude