South Twin is fishing well, but the fish are showing signs of copopods (gill lice) after ice out. The fish are seemingly fine otherwise, but many of the fish being caught are reported to have the copopods covering the body, some more than others.
Balanced Leehces, Olive Wooly Buggers, Damsels and Chironomids are your early season flies here. Tubing is going to be your best option.