Was up there last weekend. We stayed at Greenland cove. 18+ inches of ice with 6 inches of snow on top, no slush. We caught salmon in 20 ft of water just under the ice. Also caught salmon targeting brook trout in 6 FOW.
Caught a nice togue by putting a dead sucker on bottom.
If you're setting near bottom for togue and keep getting flags with only 2 or 3 feet of line taken out, it's probably white fish.