I have found sandy points to be good areas for burbot come March.
They are milling around those areas in preparation to spawn or are in the act of spawning.
If the lake has lots of current watch for thin ice around points.
If they are in an aggressive mood active jigging can work OK, just make sure you to keep near or on bottom.
Set lines work when they are more negative.
I would try both and let them tell you what they want.
Minnows, smelt or fish parts, if legal in your area, are good bait to start with.
Don't over look scented and glow in the dark soft plastic lures and jigs.
In the lakes I fish for burbot, they eat most fish species, but they really like crayfish.
If crayfish are also in the lake you are going to ice fish a crayfish looking soft plastic near the bottom might be work for you.
If you have an underwater camera take it, it's great in reading their mood and triggering them to bite.
Good luck with the burbot fishing.
WW