The fight scenes.....

Who thought Dreyfuss went quite well in the fight scenes?. I had a close look at them and I can't notice a stuntman in his place, but it would've been one that fell in the fish skip. Dreyfuss isn't known for physicality in his roles, so I give him credit here. He had a fight scene in the sequel too. They are his only fight scenes in all of his movies.
You can easily notice in the Estevez fight on the boat, that it's mostly not Estevez. The stuntman is a lot taller.