Our house was on the old Black River, adjacent to Lake Onalaska separated by the breakwater. Just down the road from where Moosetrot lives now. Trapping season opened late on the Mississippi refuge, after duck season. This is late 60s, during my teen years, which explains the following.
Winter started with a cold snap and no snow. Perfect conditions for trapping muskrat and beaver as the ice revealed bubble trails and runs below. Also made running the 50 traps (max at the time) quicker as I wore ice skates pulling a sled with a box bolted to steel runners.
My 'rat line made a large "C" on the inside bend of this back marsh, working the huts on the periphery. Now being a week or so into the season I pulled sets that had gone stale on the front end of the line and was going to extend the tail end with new sets. Spud, lath, willow poles and #1 longsprings were all in the box. I thought why not skate directly to the end of the line, put in new sets, then skate back through the line checking sets on the way home. Except the shortcut was across a stretch that collected the meandering currents from the "C" in the marsh into one about ten yards in width. Thought it should be frozen thick enough by now. Teen years. . .
So I headed across this stretch with sled in tow, skating hard. Sure looked thick enough from a distance. Heard the ice cracking underneath as I rocketed across. That lasted about two seconds before I broke through into roughly ten feet of water. As I went down the sled shot over me and plunged into the drink. I vividly recall hitting bottom, looking up, seeing the hole, and noting the broken ice and sediment was flowing to my left with the current. In that moment I knew if I didn't gain the hole I'd go downstream with the current and life would be over.
I shot up and grabbed the ice on the downstream side of the hole. Worked my way to the edge where I had gone in and broke ice in the direction I arrived until it felt solid enough. With one movement I swung my right leg up and over and hooked the ice with the skate. Rolled over onto thick ice and kept rolling away. Stood up and started skating home. It was a very cold day, probably near zero. I was a good mile out.
By the time I got to the bank my arms were frozen to my body. It was a real chore to walk up the short hill to the house. Got to the back storm door which was a walkout from the basement and banged on it with my body. Mom was doing laundry just inside. I remember the look on her face when she opened the door. She said I'll get Dad. Must've been a Saturday morning. Dad comes, bear hugs me and carries me to the basement shower. Sets me down inside and turns the water on. The rest is a blur.
For several years afterwards any time my hands got wet and cold my fingers would swell. Was probably well into my thirties before that quit.
Sure I've gone through the ice many times since, but always under conditions I know I could physically control. And as I've aged my decision making skills have sharpened a little. That was in one word . . . stupid.
My brother and I dragged that area that summer multiple times but never did come up with the gear or the sled. Probably off by who knows how far.
Anyway, for what it's worth, respect the ice.
Sidenote: to this day when I ice fish first "iffy" ice I push out a 12' jon boat with a long length of rope tied to it, tied to a tree on the bank. And I sit in the boat and fish over the side.