I think the consensus is this has been the best ice fishing season in a long time in the Devils Lake area. I'd be looking at March as a great time to be there. Woodland Resort is a nice place to stay, and they have a good guide service too. Lots of water to look at in the main lake, and some of the best fishing is often found on the smaller lakes around the big lake- Pelican, Stump, and Irvine. You can get a pretty good feel for how the bite by watching the various resorts and guides websites and Facebook pages.
Best of Luck on your trip to North Dakota! Jim Carroll NPAA #13