I have paddled Superior several times. Three in Lake Superior Provincial Park for five days each and three between Marathon and Wawa. The south facing cliffs are scary ( I worried about Point Isacor for days and when we paddled by it we lucked out . Twice there were waves but nothing horrid save the reflecting wave unsteadiness. Once we could actually touch the cliffs.)
Also for a few days out of Rossport. The weather was dismal and we weren't having fun so we bailed for the Apostles which were a good 20 F warmer.
However I had never heard of the Lake Superior Water trail. Google gave me this.
https://www.dnr.state.mn.us/watertrails/lswt/index.html
I might have a next summer trip! Thanks!
We have done Superior by canoe and by kayak. The kayaks with their lower seated position and deck are so much easier as you feel more stable and can actually relax and look around if the seas are just mildly bouncy. i.e. less affected by wind and waves. That said good weather reading skills and always knowing where you are and where your safety exits are are paramount. As the ole Kenny Rogers song goes " Know when to hold 'em and know when to fold".. You probably will be able to get NOAA weather radio (unlike Pukaskwa). Heed even if it turns out to be wrong.
Surf landings are always an exciting skill or in my case a non skill. I always get soaked. With dry gear this is not a problem. And they are inevitable as lots of times the wind is from the south.
Best to go forth with a PLB or INreach even though Hwy 61 is close. And best to not go alone for your first foray.
If you are in canoe a spray skirt is helpful even a partial. If using a full practice dumping before hand so you know how to get out of it without entanglement. In canoe be extra conservative.
The one thing that can be fatal is a schedule. Leave a LOT of room in yours for layby days.