Yes you can get to Curtis from Munising. Just came back from Big Manistique Lake. Seney, Grand Marais, Munising & Marquette areas were all great, Good snow & enough to groom nice. we could always use more though, This weekend will probably tear it up. Take the lake crossing to Curtis from 43 south, much shorter & easier on the sled. Ice is safe 7 inches to 1 foot of Ice on Big Manistique.