I'm planning a trip around Lake Superior for late June into early July. Everything I read says I need to book my accommodations early. However, I don't have exact dates or a solid itinerary nailed down. Also, I don't want to be a slave to a schedule. So for those of you who have made this trip, how imperative is it that I lock in reservations? Any one just wing it around the lake? And if any one has any other words of wisdom regarding this endeavor, let's hear it. Thanks.