I'm paddling the Allagash in about a week with some friends and it was suggested that I pick up a dry bag or two for the trip. I could just spring for a standard dry bag like the SealLine Baja, but I'm wondering if dropping a little extra cash on something with shoulder straps like the Boundary pack would be worth it. I know there will be a portage or two on the trip, but I don't think they are longer than a half mile. Just wondering what some other people's opinions on the subject are.