Of all the things I've tried for ice fishing my preference is the navionics app on my iPhone. It brings me fight to the depth contours and I can drop pins on things I find like sunken bridges and brush piles. I've gone back to the same sunken bridge in open water on Nimi for 4 straight years and I've never lost it! If you have a smartphone the app is $10 and that's it. No added cost and you always have your phone with you anyway.
Inland Guide Service: Servicing NE Ohio lakes: Deer Creek, Atwood, Berlin, Dale Walborn, PLX, and Nimisila; for crappie, bluegill, saugeye, and walleye.
Team Wilcraft!
Pro Staff: IceFishOhio, JM Jigs, Eurotackle
Custom jigs available--pm for details