Fantasy Friday: Thick Ice

It hadn't been the best year for their sport,
But nothing keeps a fisher off the ice
While it is solid. This week, the report
On same said that conditions would be nice,
And one tagged fish still swam free in the lake.
So Mikel and his sister packed their gear
And ventured forth, thereby to shortly take
Their place in legend -- for this was the year
The ice troll took up residence beneath
The surface of those waters. When it took
Their bait, it took them, too, into the deep.
It used poor Inge's head to bait its hook,
And now it is a fisher, yea, of men.
How shall we make those waters safe again?