I have paddled into the border lakes chains south of Saganaga a couple times. Marabeuf, Devil's Elbow, Gniess. I have seen motorboats in there both times. Not huge boats, but not sportboats or square stern canoes, either. I can't figure out from aerial photos how they access the lake. Roads are not visible in the aerials. I don't think the boats were pulled up Sag Falls and Horsetail Rapids...one of the times I saw a boat in there it had only one person in it. Does anyone know anything about accessing these lakes with a motorboat?