Targeting bass under the ice is not something that many folks do, but during the winter months you are able to catch some beautiful Largemouth Bass while ice fishing. Catching bass in the middle of winter is much like finding bass in the summer months. The bass will move out and hang around weed lines and deeper drop offs. A trick to finding bass in the winter is to know where there was weed beds and weed lines in the fall, bass will relate to these weed lines to feed in the winter months.
In conclusion, fish weed lines in 15 to 20 fee of water with tip-ups with large shiners and suckers and jig using small jigs and spoons. If you follow these few tips you will catch bass under the ice. I have caught some of the nicest bass I've ever caught while ice fishing, but don't expect to catch a ton of bass. Catching three or four in a day is a good day, but by using small jigs and spoons you will also catch panfish, which will keep the day interesting.
Good luck and stay warm out there.