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Great story . Suckers and char what a mixed bag! One thing that will extend your night on the ice would be to light up the hole with a submerged light or car light on a deep cell. I use a crappie light to extend my fishing into the night and the fish love it!You know those muskrats make great mittens! Had the same problem about 6 years back with the buggers building feeding stations in my shanty... Moved the shack, blocked the holes etc... Nothing worked. Finally had enough of them and put a stop to the madness of them chasing all the fish off every time they came up or around the holes in the shack. A couple pelts on the shanty wall followed by a nice pair of mitts!
Yeah, those muskrats can be a problem. A friend set up his spearing shack over about 5 feet of water. Within 5 days a muskrat had deposited enough mud and weeds on the bottom in the center of his spear hole to reach the surface of the water. That is the way they make those mud/weed "push ups" you see under the snow here and there on some lakes. Its a pile of debris stacked up from the bottom of the lake to keep an air hole open. I've found a 1 1/2 jump trap hanging in the auger hole usually contributes to my friend's trap line baits rather quickly. Kitties and coyotes love'em. Last winter I tried experimenting with one of those 9 inch clamp on reflector shop lights and a 14 watt fluorescent light that puts out 60 watt equivalent. Put a couple sticks across a ten inch hole, set the light on that and plugged in the extension cord to a 400 watt inverter plugged into my truck cig liter socket. After 4 hours of running the light the drawdown on the battery was so slight that when I started the engine the charge needle didn't even move to top the battery off. Really the way to go if you need to conserve battery power. And it lit up a pretty wide chunk of water. Worked great for good exposure on my UW camera. Only bad thing was it didn't help catch any lakers that night.
That green submersible should work nicely!! I have caught char, salmon, rainbows, and pike in some of our local lakes at night up until 10 pm. I don't know why 10 pm or approximately that time is closing time, but it is. We just got tired of not being able to fish after 3 pm due to darkness, and this was the way I extended our time on the ice. What worked best turning the dark lake around the shack into a daylight buffet was an old "Mr. Crappie" light, (which is really just an older model car light surrounded by Styrofoam to make it float with a 10 ft. cord and battery clips.) Anyways, the light slides inside of a 10" hole, so I just cut a hole outside the shack ALMOST all the way to water leaving around 4-5" of ice left on the bottom. Then slide the light down the hole and clamp it onto the deep cell. You would be amazed at how bright it is down there!!! I'm talking brighter than daylight, so after experimenting, we had to move the hole 10 ft. or so outside the shack. Fish acted like it was daylight outside, even the pike would slide in for a peek. I don't think it would work for deeper lakers, but I haven't tried it either... I use a pretty big deep cell which lasts the night but it's pretty heavy! Give it a try.... It's a load of fun and works pretty slick.