I was kinda wondering about this: is it always possible not to lose altitude in go around? I think not always. If you are already on the back of the power curve, you might have the power to fly level, but you're sinking. Arresting this sink requires lift, which you can only derive from speed, maintaining which requires the power. In this case, you will continue to sink until the speed is back, inevitably. If they're in front of the curve, people typically manage to level by giving up the airspeed and then teeter there before they accelerate. That may save you from comments by onlookers, but is this the best idea? Say, in gusty conditions?
My 200 hours say: screw the commenters, I'm losing the altitude for airspeed on go-arounds, all the way to the contact with the runway, if necessary. This is subject to meeting a pickup on runway, of course, but even so airspeed is my energy buffer from which I can borrow. If I'm hanging on the prop, I don't have that option.