Simcoe was once a whitefish factory in winter. Stories of my Grampa going out for a weekend, once a month, to bring home a bushel full. Gram would then get royally pissed, because she would spend 1/2 the night cleaning them and then Grampa would give 1/2 of them away. Of course, he gave them away because very few had a lot of freezer space back then.
I certainly remember going up to Orillia in spring for smelting at night when I was small. My job was to hold the lantern.