I was referring to the horsehead by lake tomahawk I think the others were as well...but this big horsehead sounds intriguing.
Vilas County Lakes, Vilas County
Iceripper - Big Horsehead (in Presque Isle) right off of hwy B has decent pike, perch and bass fishing as of last September. There are reeds to the right of the launch as you walk out that I'd locate off of and try around there for perch and you could go fairly random for the pike. Look for the weeds in 20ish feet of water - they're actually algae and all species cruise that in the winter.
Never heard of that Horsehead having winter kill. It's got a lot of deep water and river coming in and out for O2 supply. You guys sure you're talking about the Horsehead in PI?
I do remember it freezing out, I fished it before the freeze but after the freeze I couldn't catch much of anything. I haven't been there in a few years now though, not sure if they stocked it after the freeze or if the population is making a come back. It is a shallow lake so when it was really cold it froze out a lot of fish (I believe that was around 6 years ago).
I've only ever ice fished horsehead never open water. It's been a few years since I've been out there due to being told it froze out....(can anyone confirm the truth to this) wasnt sure if I was told that to keep me away lol. Anyway from my opinion its def worth a try we used to chase flags out there alot with a couple decent pike mixed in each time. Jigging was also decent with mixed results. If u try it out let me know how it goes. It's on my list to try again. Theres so many lakes in the area I haven't made it back in awhile.