by Cliff Jacobson Final portage on the Frost River that leads into Little Saganaga Lake. Correction: not a portage; it's a rock-jumble that mixes seconds of paddling followed by seconds of lining followed by... whatever! Funny, how one’s perspective on things changes with age. Trips that are easy when you’re young become challenging with age. One late September, three friends and I paddled the Frost river (Cross Lake to Round Lake) in the Boundary Waters Canoe Area. I’ve d