I was in the grocery store the other day buying some salmon steaks. Since the store prides itself on fresh fish, the clerk said that he would cut me some.
So, as expected, he went to the display case and picked up a whole salmon and place it on his cutting board. Then, as expected, he pick up his knife and began sharping it. And, when he went to cut the fish, he place the knife edge on the fish, like he was going to cut it. But instead, he smacked the back of the blade with at rubber mallet and a nice steak fell off of the end of the fish.
The mallet trick seemed to work as he was able to lop off four steaks in a matter of seconds. What he really needs is a Salmon guillotine.