During my ME training my instructor took me through some go around on a single engine, I was not aloud to use trim. The alt where I was told that the r/w was blocked was about 400’, with one engine shut and the other at full power it was very hard on the leg, after one circuit and one go around the leg started to shake. Hard to say why the pilot did what he did but he made one bad mistake, he has tried to go around.